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Talk:Sprint Corporation

History re-worked
I found the company origins very hard to understand, in the main because they were not consistently chronological. I intended just to re-order the existing content into a semblance of a timeline, but it turned into a bit more. Still mostly used the material that was there, but added a citation for the origin of the name "Sprint", and moved out a sub-section "Sprint PCS" that belongs under the "Sprint Today" section. Then added a title for a ref in the head section. So really just cleanup, but I think it is more usable and coherent now. Swiveler (talk) 09:28, 28 April 2009 (UTC)

4G Status
In the article it says "The rollout is expected to reach 100 metropolitan areas and 100 million people by the end of 2008." Well it is 2009. Does anyone know what their status is? Did they make another projection? Lambedan (talk) 05:15, 13 February 2009 (UTC)

Sprint Returning to OP
It was announced today that Sprint will reconsolodate its world headquarters ocne again in Overland Park. I have slightly edited the businesses section to accomodate this recent change, however it may need some re-wording to make it flow correctly. Please make edits as news comes forward on the business moveKcuello (talk) 21:50, 13 February 2008 (UTC)

http://www.kansascity.com/news/breaking_news/story/488335.html

Too much corporate copy
This article is 100% marketing copy. Given widespread problems with Sprint, it seems that a more indepth article is needed.

Wikipedia is not the right forum for airing grievance with a particular company 66.68.222.240 (talk) 17:44, 21 March 2010 (UTC)Rohny

Problems with Patcat88 over editing
User Patcat88 continues to delete Nextel's roaming info, and justifies it by sourcing post from Howard forums and some PDF from CR from 2004. Which does not mention anything about Nextel roaming. All it says it "No roaming on other systems", which means CDMA, TDMA, GSM, ect.

Here is the roaming info.

Airtel roaming agreements listing: http://www.airtel.sc/our_roaming_partners.html

Extend America: http://phx.corporate-ir.net/phoenix.zhtml?c=63347&p=irol-newsArticle&ID=429644&highlight=

SouthernLINC Wireless: http://www.southernlinc.com/2002_1.asp

The2ndflood 03:37, 31 December 2006 (UTC)

Sprint Nextel Wiki reorganize
I just updated this Wiki. Info was scattered all over the place. A bunch of the info was listed under the wrong topics, so I reorganized it. I tried to keep it simple. Please don't restore it to the old profile. But please feel free to update it to better reflect the topics.

the2ndflood

Sprint hands out information w/o consent
I don't know whos bright idea it was to list info on that topic, but I will report it to the mods next time it happens. With identity theft running rampant, some want to list ways to help them out?!?! DO NOT POST INFO THAT CAN CAUSE OUR ACCOUNTS TO BE HACKED! That topic was just stupid to post!

72.150.114.173 20:43, 9 July 2006 (UTC)

 * Perhaps an equitable compromise would be noting that news but leaving out the toll free number and the blogs that have posted that info? Still, I doubt widespread hacking will occur.  Fabricationary 22:47, 10 July 2006 (UTC)

 * If you have a problem with it, take it up with Sprint. The information is already out.  I tried the number; it appears to be disconnected.  Again, your problem with with Sprint, not Wikipedia.  SDC 23:03, 10 July 2006 (UTC)

I don't think the info needs to be there at all. T-Mobile doesnt have any mention of the OTA Sidekick hacks, or for that matter ANY negative info. None of the carriers have their privacy issues listed. My problem is with YOU, Not Sprint. This story was not widely released. Most people I have spoken with have never even heard of it. So why is this info needed? If the problem was corrected, then why does it need to be listed here? Are you going to list every single problem, every single carrier is going through? This looks like a hose job against Sprint by people that don't care for the company. And the major problem with this story, is the fact that it is step by step. Anyone can read how to do it and find a new number to do it with. If you are going to list this story, then post ALL STORIES ON ALL CARRIERS. Don't be bias. 68.19.231.39 01:08, 11 July 2006 (UTC) Joliee

 * Do others here think it is worth it to mention that privacy scandal where someone could actually steal phone/phone caller information of *not* only Sprint but also Cingular, Verizon and T-Mobile customers? A term called pre-texting.

 * IT was reported on CNN as well when the host Wolf Blitzer of the Situation Room bought his own phone records Transcript -- ( http://transcripts.cnn.com/TRANSCRIPTS/0601/13/sitroom.02.html ).

 * I think it was a big deal. Congress was going enact a law over it ( http://news.com.com/2100-1037_3-6047462.html ) because you could get information from any US cell phone provider.

http://www.eweek.com/article2/0,1895,1917364,00.asp http://www.eweek.com/article2/0,1895,1917863,00.asp http://www.msnbc.msn.com/id/13466406/

CaribDigita 04:11, 11 July 2006 (UTC)

This is what I was saying. Every wireless carrier out there has these problems, but we shouldnt use this place to point out every single one. When the company becomes aware of the problem, then corrects it, the issue is no longer an issue and should be left to end. That topic was more of an attack on Sprint then anything else. And by posting details on out to commit the fraud, you are just making it worse for everyone.

Leave these issues off of this site, unless you are going to make a list of every problem, for every carrier.

68.19.199.169 23:30, 11 July 2006 (UTC) Joilee

 * Your right! I just found out that on Verizon FIOS, your static IP# will have your name and address listed on it.... These companies just- don't get it! { link }  CaribDigita 21:51, 14 July 2006 (UTC)

I thought this topic was finished? Sprint corrected the problem, so why does it still need to be listed? When a company finds a problem and corrects it, then whatelse is there to to? How can this info be helpful to anyone now? Let's post current, vaild info.

CDMACORE 20:16, 18 July 2006 (UTC)

Tagged for Cleanup
I have tagged this page for cleanup. I have already corrected several grammatical errors, however there are quite a few more spread throughout the article. Also, the organizational layout of the article could use improvement. --Bshrode 21:56, 28 March 2006 (UTC)

Sprint World Headquarters....
After further research, it turns out that the Corporate Headquarters for Sprint is in Reston VA and the WORLD Headquarters are in Overland Park KS. (This information comes from their website). The overland park campus, finished in 2001, cannot be for enginering only- if anyone has seen the campus it is gigantic and cost more than 100 million dollars to build. It wouldn't make sense for a company to "waste" that money away- it was only built 5 years ago. They have also made a deal with Kansas City, since it is the site of their headquarters, to sponsor and donate money to have their name be on the New Arena being constructed there- the major reason being that Kansas City is a VERY important part of their operations.
 * While I agree with you that the Overland Park campus is large and important, there's no way the company would have built it after the Nextel acquisition. Even before Nextel came into the picture and the company moved its headquarters to the Reston, VA, area, not a small percentage of the office space in Overland Park was completely unoccupied.  The campus was built with regional consolidation in mind (bringing in smaller offices in the KC area), but that's not likely to happen now.  In the end, what people call the two campuses doesn't amount to much.  The headquarters are where the CEO resides, and that's Reston.  I speculate that the KC campus will diminish in importance in the future, with more of the space being leased out to shared tenants.  I'm sure they'd love to have everyone at home in the Reston area, but there isn't enough office space in that area and it would cost more to move everyone than it's really worth.

Location of Sprint world headquarters
I am a native resident of Kansas City, Missouri and I know that the World Headquarters building (actually campus) is located in Overland Park, KS. Since my word is not good enough to back this up, I have provided the exact words of the web site that state the location of Sprint's World Headquarters- it says nothing about the Virginia location. My source is: http://www.sprint.com/hr/worldheadquarters.html also http://www.sprint.com/sprint/fastfacts/campus/ and http://www.sprint.com/sprint/fastfacts/overview/index.html.

Each source shows the Sprint Campus in Overland Park as the world headquarters, and since it was founded there it should be common sense that it would not be in Virginia. However I did see one source under investor relations in the phone sales department that showed corporate headquarters in Reston, VA which was the former Nextel headquarters buidling- so now probably just the personal phone sale's compnay of Sprint's headquarters. But the entire corporate as a whole is located in Overland Park. Since only one source is able to back up the Reston location and 3 back up the Overland Park location (plus that site didn't even call Reston their world headquarters- just "corporate headquarters") the Overland Park location is definatley still the World Headquarters unless it is announced from Sprint itself. Also since these sources are from the Sprint web site directly, no other source would be valid unless it is from the government records or something of a similar matter.
 * I'm going to put this issue to rest once and for all. I work for the company.  The headquarters are in Reston, VA.
 * 2001 Edmund Halley Drive
 * Reston, VA 20191
 * (703) 433-4000 (That is a Virginia area code.)
 * http://www.investorguide.com/stock-profile.cgi?ticker=S

--

Donahue and Forsee
Donahue is Chairman of the Board while Forsee is President and CEO. Don't you think that Chairman of the Board is a higher rank than either President and/or CEO? — Vesther 21:19, 1 October 2005 (UTC)
 * As I understand it, Forsee, as President and CEO, is an employee of the corporation whose power is granted by The Board. He has complete control over the operation, direction, and vision for the company.  Donahue, as Chairman, plays more of an advisory role along with the other Directors.  Technically, Donahue is above Forsee in the food chain, but Donahue does not represent the company in public and does not have a direct role in the internal chain of command.  That is, the buck stops at Forsee.

-- Removed SBC Communications as a competitor, as the deal has closed and the new company will be called AT&T, Inc.  User:  quizzoid -- I'm still cleaning up the portions about the litigations that Sprint Nextel is facing as result of their merger. By all means- if anyone feels they are able to reword something in particular better than I have, I have no quarrels with that. But as far as I know according to some sources I've read, this company either has to acquire some of these companies (A.S.A.P) or else possibly face a lengthy legal fight as result of the merger.

P.S. The other reason I think these acquisitions are importaint-- is at this rate which Sprint Nextel is growing (they have something like 44 million customers?) with all of these small acquisitions of "500,000 customers" here and another almost "1,500,000" there. If they keep this up- they may soon reach the size of Verizon Wireless? I figure According to Cingular-, that company has 52.3 million customers. These small deals of Sprint Nextel have possibly added another ~ 2 million following the merger? and now I'm noticing on the BoostMobile (U.S. website) that company claims 1.7M customers and that they're "a subsidary of Sprint". That possibly may put Sprint Nextel ~ 48 Million customers almost. If this is correct-- and I'm not counting any of the customers they've counted twice then Sprint Nextel is just-about on the verge of by-passing Verizon Wireless? as second largest wireless provider in the USA.

I wouldn't at consider this fuzzy math as fact until I see their Q4 or 10K report stating their actual customer numbers. CaribDigita 06:25, 27 November 2005 (UTC)

Forsee was an idiot. Donahue was a God for telecommunications. —Preceding unsigned comment added by 76.171.194.170 (talk) 04:34, 7 November 2009 (UTC)

Location of headquarters
Any doubt about the headquarters location should now be resolved. As of the merger with Nextel, the company's main headquarters moved to former-Nextel office space in and around Reston, Virginia (Sprint also had an existing presence a short distance down Sunrise Valley Rd. from the old Nextel campus). The former headquarters campus in Overland Park, Kansas, is now for operations and engineering only. The company does not have "two headquarters" in any sense; from a legal and leadership standpoint, Sprint Nextel is headquartered in Reston, Virginia. --24.7.38.65 02:18, 2 January 2006 (UTC)

I believe it to be in Virgina as well. I think they're in the process of changing everything on the websites to Virginia. If you goto Sprint.com and click on "Contact Us"

it reads (on the bottom left):
 * ( http://www.sprint.com/contactus/ )

Corporate Headquarters; 2001 Edmund Halley Drive; Reston, VA 20191; 703-433-4000

On Hoovers.com (Which is a part of Dun & Bradstreet) a very reputable site when dealing with corporate and financial info:

 * http://premium.hoovers.com/subscribe/co/factsheet.xhtml?ID=103483

On there Sprint's legal address is listed as Virginia as well. Ofcourse this may not be truely settled until the first 10-K report comes out, but I believe it is in Virginia as well. I think only the older sites which haven't changed still say KS. For example the Copyright notice says KS still.

 * http://www.sprint.com/legal/copyright.html

If you notice now the 2nd + 3rd links suggested above have since been taken down from the webserver.

CaribDigita 03:29, 2 January 2006 (UTC)
 * http://www.sprint.com/sprint/fastfacts/campus/ (Gone)
 * http://www.sprint.com/sprint/fastfacts/overview/index.html (Gone)

Erick Sanchez?

 * I removed the statement about Erick Sanchez as it is very suspect. This noted person is not mentioned in the Executive Bios http://www2.sprint.com/mr/exList.do nor, on the History timeline, http://www.sprint.com/companyinfo/history/ and searching the Sprint "Newsroom" on "Erick Sanchez" yields no results.  Meanwhile a google search for "Erick Sanchez Sprint Nextel" also turns up a single website with a cached copy of the Erick Sanchez statement from Wikipedia. Is there a source for this Erick Sanchez sttatement and if so how is it that they were "good" for the company?  At the same time the Contribs of that IP# are suspect. |198.57.19.100.  Is anybody else able to turn up more on any Erick Sanchez? I'm thinking it's just spam. CaribDigita 13:15, 16 January 2006 (UTC)
 * I heard that Erick Sanchez used to be a VP or something. I'm not too sure.

Just to let others know.

 * I had added "Judith A. Muhlberg" at the time because there were only 2. People listed there. In my mind she seems to have been very active, including working for State Farm, Boeing, for Dick Cheney and several other prominent persons currently in the White House.  However if there is someone else at Sprint better suited for that spot, feel free to remove her and add that other person.

Stories about Judith Muhlberg. Example #1: http://www2.sprint.com/mr/news_dtl.do?id=7540 Example #2: http://www.awpagesociety.com/about/trustees/Judith_Muhlberg.asp Example #3: http://www.businessweek.com/magazine/content/01_32/b3744016.htm

She has some impressive credentials I think. CaribDigita 16:13, 22 February 2006 (UTC)

Since I work for the company and know the key people in the organization. I believe that Len Lauer should be added to the key people section. His is currently the COO. If not I believe you should add the new CFO.

 * Agreed, I've added Len Lauer as he is currently the COO and was only bumped from CEO to allow for Donahue to carry over his leadership position from Nextel. He clearly is one of the core leadership of the company.

Leaked photos of the new dualed Motorola iDEN-CDMA phones.
{Scroll down a little)

http://www.howardforums.com/showthread.php?t=892205

 * Speaking of new phones, it looks like Motorola is finally innovating some of their expensive lack-luster Nextel-phones that they shove on us Nextel Customers. The new i580 will have a rugged design, plus a camara --and-- bluetooth capability .  Unfort. it still doesn't have the 900MHz range (which Sprint got from the purchase of Velocita Wireless.) The 900MHz should provide better iDEN cellular coverage thus reducing some of the dropped-calls. CaribDigita 22:03, 2 May 2006 (UTC)

Name?
Why is it still being called the Sprint Nextel Corpaoration. Offically I belive that it is just Sprint the only reason that the Nextel name is being used is there are still Nextel phones out there. With the Nextel Cup being Changed to the Sprint Cup with the start of the 2007 season I don't see way people still think it's the Sprint Nextel Corp. It seems to me that it's should just be the Sprint Corp and they are working on totally phasing out the name Nextel.
 * Why? Because the legal name of the holding company is Sprint Nextel Corporation. As long as the legal name is such, the Wikipedia article will remain titled as such. Most articles aren't titled based on a d/b/a name. KansasCity 17:56, 4 June 2006 (UTC)

Founding Date?
You know, this wasn't a problem until just recently. What was wrong with the founding date of Sprint Nextel being 1899? Granted, Sprint bought Nextel in 2005, but the entity Nextel is technically defunct. Sprint Nextel is just the new name of Sprint following its buyout of Nextel. Sprint did not shed its old name like SBC did following the AT&T buyout. KansasCity 17:56, 4 June 2006 (UTC) According to Sprint themselves, the founding date is 1899. Check here: http://www.sprint.com/companyinfo/history/ I do not see how it could have been 1898... a typo?

Article Split
Just as was done with the AT&T article, I am proposing an article split: Sprint Nextel should detail the history of Sprint before its acquisition of NEXTEL and the status of the current company. NEXTEL Communications should be created to detail Nextel before the Sprint merger. KansasCity 18:01, 4 June 2006 (UTC)

 * What do others think? Is Nextel historically significant enough to warrant having a Pre-merger encylopedia entry on NEXTEL and SPRINT as well?

and putting "NEXTEL" under Cat: defunct companies in the United States?

CaribDigita 16:02, 24 June 2006 (UTC)

 * I tried it out just putting everything in the past-tense. It would look like Sprint Corporation (1899-2005) and NEXTEL Communications (1987-2005) if the AT&T syntax were used. CaribDigita 11:04, 25 July 2006 (UTC)

 * Wow. I really think that's a huge improvement.  I especially like the idea of the current Sprint Nextel article gaining a bit of clarity.  Right now it's just a sprawling jumble of an article.  Justen 08:36, 26 July 2006 (UTC)

Sprint Nextel Competitors
I dont think we need the Sprint Nextel Competitors section in the article because of the American mobile phone companies template at the bottom of the page. This information is just repetitive. -- Masterpjz9 17:36, 8 June 2006 (UTC)

Location of Sprint Headquarters - Again
According to Sprint's annual reports, here are the locations for their headquarters. As you can see, from 1995-2004 Sprint used the term World Headquarters. In 2005 it changed to Corporate Headquarters.

1995-2000

Sprint World Headquarters 2330 Shawnee Mission Parkway Westwood, KS

2001-2004

Sprint World Headquarters 6200 Sprint Parkway Overland Park, KS

2005-

Corporate Headquarters 2001 Edmund Halley Drive Reston, VA

http://www.sprint.com/investors/annualreports/

Some of the confusion comes from different meanings for the word headquarters. A corporate headquarters is a legal or corporate term. It is where the CEO has his office, and where the board of directors meets. Headquarters can also mean the central office where a large number of employees work. When Sprint used the term world headquarters, they were using both of these meanings.

The campus has between 12,000 and 15,000 employees. This replaced about 50 leased buildings throughout the Kansas City area. The campus was both the corporate headquarters, and the place where they consolidated much of their office space. There were two main purposes for this consolidation. First, it was a long-term financial savings. Second, it improved efficiencies and communications by having many employees together in the same place.

On August 12, 2005, Sprint Nextel announced the completion of their merger. Here is how they described their locations in their press release: "Sprint Nextel has approximately 80,000 employees with its corporate headquarters in Reston, Va., and its operational headquarters in Overland Park, Kan." This is also the verbage that is used for internal documents.

http://www2.sprint.com/mr/news_dtl.do?id=7760

At this point Sprint Nextel dropped the use of the term World Headquarters. The corporate headquarters stayed at the location of the Nextel corporate headquarters. In some ways this was a compromise with the Nextel management, but it was also a reflection of the different market segments each company had. Nextel had a much larger presence in government and large business than Sprint had. There were advantages in being close to the beltway.

Very few peope moved from the campus to Reston. Many executives now just keep two offices. Most employees who work at the campus will stay at the campus. There is no advantage to moving 12,000 - 15,000 people, especially since labor rates and overhead expenses are much lower in Kansas than in Reston, VA.

My point to all this is that I would like to change the verbage in this article to match the verbage that Sprint is currently using.

Corporate Headquarters: Reston, VA

Operational Headquarters: Overland Park, KS

Comments?

Jayscore 15:31, 24 June 2006 (UTC)

 * Why they make it soo confusing is beyond me. *Boggle-boggle* :-) CaribDigita 16:12, 25 June 2006 (UTC)

 * Apparently it is only confusing to outsiders. In their announcements management has stated the corporate headquarters are out east and the operational headquarters would remain here in Kansas City. —Mike 15:38, 28 June 2006 (UTC)

Ambiguity over the correct acronym for SPRINT (if any)
This section presents a definition for SPRINT as if it is an acronym: http://en.wikipedia.org/wiki/Sprint_Nextel_Corporation#Sprint

The problem is it is not clear whether that is the correct acronym or if a single correct acronym for Sprint even exists. Here are the options and versions I've found so far:
 * Southern Pacific Railroad INTegration (from http://en.wikipedia.org/wiki/Sprint_Nextel_Corporation#Sprint and also mentioned at http://www.trainorders.com/discussion/read.php?1,1179895 )
 * Southern Pacific Railroad Information NeTwork (from http://en.wikipedia.org/wiki/Talk:Right-of-way_%28railroad%29 )
 * Southern Pacific Railroad Internal Communications. (from http://tcp.dramatools.net/archives/000368.html )
 * Southern Pacific Railroad Internal Telecommunications (from http://tcp.dramatools.net/archives/000368.html )
 * Southern Pacific Railroad Internal Network Telecommunications (from http://www.trainorders.com/discussion/read.php?1,1179895 )

"Rex Hollis, the VP of Marketing at the time (now with Loral), ran a contest to select a name. The winning entry was "Sprint", and was submitted by Tony Broadman (now with Qwest).  "Sprint" never really meant anything, but it makes an interesting story.  It was only after the name began to catch on that attempts were made to "force-fit" it into an acronym."
 * also this note says it wasn't an acronym, at least not at first, http://yarchive.net/phone/sprint.html which tells of a naming contest:

 * also this version "Yes. I have heard it the way Wally tells it - "INTernal" - as well as a version that the initials SPR just naturally lended themselves to the name SPRINT." (from http://www.trainorders.com/discussion/read.php?1,1179895 )

http://groups.google.com/group/misc.transport.rail.americas/browse_thread/thread/e0a0b972bf6e2288/ especially this message: http://groups.google.com/group/misc.transport.rail.americas/browse_thread/thread/e0a0b972bf6e2288/0ceffe65407a72f6?#0ceffe65407a72f6
 * finally this Usenet thread has some ideas:

Kaze0010 02:20, 27 June 2006 (UTC)

NPR's Melissa Block has conducted an interview in which interviewee "Brijet Neff" states that SPRINT derives from a winning contest submission to name the company "Southern Pacific Railroad Internal Networking Telophony" and that "Telephony according to Brijet Neff gave way to telecommunications, and the name Sprint was born.", Melissa Block. The transcript begins by stating: "Melissa Block explores the long family history of the companies that comprise what became Sprint. It all began in Kansas in the late 19th century and came to include a long distance system created by the Southern Pacific Railroad Internal Network Telecommunications, or SPRINT." http://www.npr.org/2012/10/15/162963607/sprint-born-from-railroad-telephone-businesses — Preceding unsigned comment added by 50.0.192.69 (talk) 07:28, 16 October 2012 (UTC)

Sprint / Sprint Corporation or Sprint Nextel
I can totally agree with the confusion over the name. I have both a Sprint (PCS phone) and Sprint (iDEN phone/"NEXTEL"). When you call on the phone the operators still keep referring to Nextel or Sprint depending on which side you call.

If you call 1800-Sprint-1 the operators say "They are the Sprint side." If you call 1800-639-6111 (Nextel's number) the operators tell you "They are the Nextel side."

What this company needs to do is something like Cingular e.g. where people had either a "Blue plan" (former AT&T Wireless contract) or "Orange plan" (Plain old Cingular contract). Sprint Nextel might need to do something like "Yellow" and "Black" or something like that. It's annoying to somehow get transfered to a Nextel Customer service and explain your whole problem with Powervision only to be told they'll transfer you to the Sprint side. etc. If you say "I'm having a problem with my Sprint iDEN phone that sometimes means you need to say "Nextel phone" because the operator still wont know what you're talking about sometimes. Or if you do say "Sprint phone" and mean a Nextel phone sometimes they transfer you to Sprint (PCS) customer service. It's a great big mess right now. CaribDigita 01:00, 3 July 2006 (UTC)

Sprint and Nextel should separate. Let them be on their own. I think Nextel neede Sprint popularity.

In additon, the text "The company outsources its customer service operations to Convergys, the world's leading customer care outsourcing company." Is no longer accurate, as Nextel still has contracts with ACS and TeleTech (at least) for customer care. If I had could find a reference, I'd update THAT myself, but I can't.

Stockholders and pitchmen edit
Do stockholders routinely remove any negative information from this site in order to pump the stock price up? —The preceding unsigned comment was added by 146.74.225.90 (talk • contribs).

External link problems
I've removed both link to the "my-nextel" site. The first link was to a list of phones that was a click-though ad for ringtones. The second link was for an utterly non-notable forum with ONE post and two registered users. The policy for external links is at WP:EL. I can't see any possible reason for including the link. There are probably other links here that need to be removed as well. Kuru talk  01:40, 25 July 2006 (UTC)

You might want to watch over the links page. IP address 206.106.225.161 restored that my-nextel site, then after it was removed again, 4 other links were deleted in what seems like retaliation. Only 1 of them being considered a spam link. I agree that those links you deleted were not helpful. But I don't consider mobiledia.com, phonescoop.com, and pcsintel.com spam.

CDMACORE 20:07, 31 July 2006 (UTC)

Again, a simple list of phones with "buy now" links and clickthrus to resellers is not acceptable. You can easily see a list of phone on the company's site. Please desist, or discuss your reasons for continually adding the links here. Kuru talk  00:30, 1 August 2006 (UTC)

Kuru I see your point and agree with it. That other site was just a link page selling devices and services. But I don't think Phonescoop.com and Mobiledia.com count as spam. I just added those sites to compromise with the user adding the My Nextel page. If that user has nothing to do with My-nextel.com, and is only after device info, then Phonescoop or mobiledia.com would fit that bill. If they are trying to add their own seller web page, then this method would prove that as well. Because they would continue to add that spam link and further action could be taken.

CDMACORE 03:48, 1 August 2006 (UTC) 03:46, 1 August 2006 (UTC)

mynextel.com used to be Nextel-owned, and a customer service tool... seems to be cybersquatted now. Still shouldn't be here, as sprint.com and nextel.com have alwasy had the exact same login functionality on their homepage as mynextel.com ever did.

Sprint commercial actor
Who is the trenchcoated actor on the commercials, who always comes in with solutions with a wry look on his face? Chris 19:36, 12 August 2006 (UTC)
 * FYI: He was inside the ":Category: Sprint Nextel" at the bottom of the page. Brian Baker (actor) –  CaribDigita 21:21, 12 August 2006 (UTC)

Outsourcing of customer service for Sprint
It is incorrect to state that Convergys is the only outsourcer for Sprint's customer service. ACS (affiliated computer services) and Teletech both own large portions of the customer service contract. In fact, both Teletech and ACS own larger portions of the contract than Convergys.

Stock is lagging peers, today's annoncement brings another wave on negative analyst comments on the merger and management. Shouldn't that be part of the article?--Gkklein 22:41, 9 January 2007 (UTC)

Sprint loses 300,000 customers in Q1, 2006. Plans layoffs.

 * Sprint Nextel Will Layoff 5,000 After Loss Of Subscribers - By W. David Gardner, Tueday, January 09, 2007 (1:19 PM EST)

I'm going to bail too. I have battle-fatigue after trying to get this company to provide decent service for over a year.

 * Sprint Nextel Struggling Since Merger - Wednesday, January 10th, 2007: Forbes.com

CaribDigita 01:30, 11 January 2007 (UTC)

I have found Sprint's service to be sick. Give Sprint time. They have no offering.

74.241.169.98 03:54, 23 February 2007 (UTC)

Sprint Corporation (1899-2005) and NEXTEL Communications
NEXTEL Communications and Sprint Corporation (1899-2005) should be merged with the article Sprint Nextel

-Mrsanitazier March 10,2007 6:41 PM ET

 * This had been debated before. I myself no longer have Sprint (Thank heavens) so I no longer really care about the debate outcome on their article.  But, one reason why this article *should* be saved is one-day all information about IDEN will probably be erased from the SPRINT article, when that company does away with IDEN.  Nextel (The historical company) is one place that information can be repositoried when IDEN eventually gets decommissioned in favor of CDMA by SPRINT.

 * P.S. This type of thing has also already been debated on Cingular vs. AT&T Wireless merger already (With results of keep). MCI vs. Verizon merger (same result). AT&T vs. SBC (same result.)  Etc. CaribDigita 15:20, 20 March 2007 (UTC)

Restored links deleted by Justen
Every one of those links is completely vaild. None of them are spam or are trying to sell products or services. None of them violate any of the Wiki rules. So deleting them is against the rules. Please leave them alone Justen, you can not come here and delete links that have been here for 2 years now. This is a place for info, and all of those links are helpful.

74.241.162.122 07:32, 18 April 2007 (UTC)

 * Wikipedia is not a repository of links. WP:NOT.  The nineteen extra external links you attempted to re-add are not necessary for our humble Wikipedia article on Sprint Nextel.  :)  Please try suggesting a DMOZ category for Sprint, and add the links there.  Then we can add one link to that category.  Justen 10:23, 18 April 2007 (UTC)

 * Please read WP:NOT. Wikipedia is not meant to be a directory of links.  Nineteen unnecessary links do not belong in this (or any) Wikipedia article.  Justen 08:03, 19 April 2007 (UTC)

You can't come in here and change the links after they have been here for years. We can compromise. A bunch of the links can be deleted, but important links should stay. I am so sick of people that have never, ever added to the Sprint Nextel profile, that come in here to delete info. Instead of adding to the profile. Wiki's are a source of info, and every link that was added helps back that up. You are the only one that has a problem with the links, and I suspect that you are a Cingular or Verizon fan. And you feel that helpful links for Sprint Nextel are bias.

Let's make a compromise. We can figure out what should stay and would should go. But deleting all of the imporant links, when you haven't been here for years like myself updating the info, is completely wrong.

70.156.1.228 01:19, 20 April 2007 (UTC)

 * Please read WP:NOT. Removing these unnecessary external links is not a new discussion with you.  WP:OWN.  Justen 01:56, 20 April 2007 (UTC)

External links situation
The listing of external links for the Sprint Nextel article has been growing for some time, but without any direction (and, in most cases, without any need). I'd like to try and build some consensus on where we should be at with the external links section, and I think one idea I get from WP:NOT is that less is more. I think the nineteen links already removed contribute little to the article, so I'm going to start with an example of what I think could be swapped in once the article is unlocked, if there's consensus. I'll also take a stab at reasoning behind the ones I'm omitting. See below, and please comment early and often! :) Justen 10:03, 21 April 2007 (UTC)

External links (proposed)

 * Sprint official website for phones and services
 * Nextel official website for phones and services
 * Sprint Nextel official company information
 * PhoneNews.com Sprint Carrier News
 * Sprint Nextel Commercials on Google Video

Removals and reasons

 * Boost Mobile Sprint Nextel's pre-paid mobile service
 * Already linked from the Boost Mobile article.

 * Embarq's Official Website - Formerly Sprint's local wireline phone business
 * Already linked from the Embarq article.

 * Sprint Advanced Technology Laboratories
 * Provides very little information, of limited relevance to most likely article readers.

 * Compare EV-DO data speeds
 * Not really WP:V or WP:RS, which is probably why it isn't a source for the article itself.

 * Google Maps: Street map centered on the Sprint Nextel Operational Headquarters Campus
 * Really of very limited use for almost any article reader.

Additions and other comments
Sprint tried for a while to merge sprint.com and nextel.com, but has retreated as of late, making the reinclusion of the secondary nextel.com link more helpful. The official company website, with investor information and such, could be helpful, I believe.

I've never personally visited PhoneNews.com, but it did have frequent and somewhat informative information on Sprint (but not Nextel) phones. I worry that its presence could be used as an exploitable opening to allow in other external links, and if that happens, I think its absence could be acceptable (given, especially, that the much more cohesive articles for Cingular and Verizon Wireless have omitted links to phone news and rumours sites).

Finally, I'm not particularly attached to the Google Video link, but I could see a lot of people finding its inclusion pleasant.

A lot of paring, but I think this helps make the external links section for this article much more trustworthy, simple, and navigable, while still being useful and helpful. Thoughts? Justen 10:03, 21 April 2007 (UTC)

ADSL without Landline Telephone Service
The industry term for this is "Dry Loop". That is when a subscriber gets DSL service (via the phone company central office) but does not subscribe to landline telephone service. It is my unconfirmed understanding that such a line will get dail tone but is only capable of calling 911 and has no phone number that can be dailed and thus is unable to recieve any incomming calls. More and more phone companies are making Dry Loop ADSL avaialbe in order to compete with Cable companies that would otherwise monopolize the Home broadband with VIOP markets. —The preceding unsigned comment was added by 198.31.184.166 (talk) 18:05, 2 May 2007 (UTC).

Sometimes the term "Naked DSL" is also used. Verizon for one is a company that is still foot dragging about offering this. They still try to force you to buy Telephone if you have ADSL. And if you shut off their phone service they will disconnect your DSL from whoever you have. E.g. if you have AOL Highspeed, Earthlink, etc. etc. they will also disconnect your DSL for not subscribing to Verizon phone service anymore. Then Earthlink will charge you to reconnect. I wrote to the FCC already about this as a matter of complaint. CaribDigita 20:59, 2 May 2007 (UTC)

Requesting an edit
editprotected Near the end of the page it says: "Throughout season 1-6 of the television series 24 ..." Could somebody please change the link to 24 ? Right now, it links to the year AD 24. /Ludde23 Talk Contrib 17:48, 9 May 2007 (UTC)

Articles on Wikipedia aren't supposed to be locked this long... Who's falling asleep at the switch. CaribDigita 17:58, 9 May 2007 (UTC)

 * done. CMummert · talk 17:59, 9 May 2007 (UTC)

SunCom
Why is SunCom listed as a major competitor? They really aren't, besides that only the top 5 should be listed. If the top 6 are listed then Suncom would be gone and Dobson (Cellular One) would be number 6 (in terms of subscribers) .....thoughts?Strunke 02:32, 27 May 2007 (UTC)

Requesting edit
The founding date of Sprint Nextel should be included in the corporate infobox as such:
 * 1899

The current founding date gives readers the impression that Sprint Nextel was reincorporated in 2005 when, in fact, it simply changed its name. Similar instances can be found on CBS Corporation, AT&T, and Verizon Communications. KansasCity 17:22, 2 June 2007 (UTC)

Time to Unprotect
I haven't been following this article lately, but a look at the edit history reveals that it has been protected for nearly a month. I can't see any reason at all to justify this, whichever admin protected it should unprotect it now, or, at the very least, bring it down to a mere semi-protection. aido2002 00:21, 6 June 2007 (UTC)
 * I'll unprotect it for now. My assumption is that the slow revert war over external links won't kick back up again.  Please continue the discussion in the section above before adding any more external links.  Kuru  talk  01:18, 6 June 2007 (UTC)

Sprint to begin phasing out the NEXTEL name. (again?)
Sprint to effectively kill Nextel brand

Posted Jun 27th 2007 7:28PM by Brian White Filed under: Sprint-Nextel, Misc

http://www.engadgetmobile.com/2007/06/27/sprint-to-effectively-kill-nextel-brand/

Be on the lookout this article might need a rename.
Sprint is retiring "Nextel" finally and on the website they've started to rename "Sprint Nextel" to just "Sprint" this article might require a rename in line with the company's moves to phase out Nextel all together. CaribDigita Not right now ofcourse but a little ways down the line. 20:04, 3 July 2007 (UTC)

Fair use rationale for Image:SprintLetter1 550x590.jpg
Image:SprintLetter1 550x590.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.

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BetacommandBot 04:36, 20 July 2007 (UTC)

Fair use rationale for Image:SprintLetter1 550x590.jpg
Image:SprintLetter1 550x590.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.

Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Fair use rationale guideline is an easy way to insure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.

If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images uploaded after 4 May, 2006, and lacking such an explanation will be deleted one week after they have been uploaded, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.

BetacommandBot 01:22, 24 July 2007 (UTC)

What audio codec is used?
Which codec and at what bitrate is Sprint PCS sending audio? IMHO it would be worthwhile to add that to the article. - Theaveng 11:46, 25 September 2007 (UTC)

 * agreed. (offline wikieditor)  —Preceding unsigned comment added by 98.197.253.33 (talk) 16:19, 26 November 2007 (UTC)

CDMA uses an enhanced variable rate CODEC, called EVRC. Depending on the handset, the codec is different. Most use EVRC nowadays, but the original Sony 600 used a 13k vocoder. The lowest codec offered is 8k. EVRC is used to provide 13k quality while speaking, and throttles back to 8k or less during the silence. Hope this helps. —Preceding unsigned comment added by 69.114.231.201 (talk) 01:29, 24 July 2009 (UTC)

Bloomberg reporting CEO may be about to be forced out.
CaribDigita 23:42, 4 October 2007 (UTC)
 * Sprint's Forsee May Run Out of Time to Win Back Users

Commercial
This likely does not deserve a mention or internal link in the article even if it is verified, but from the picture it looks like the Château de Montreuil-Bellay was used to tape the commercial where the guy is getting wireless internet from the middle of a body of water.--Jorfer (talk) 21:43, 13 December 2007 (UTC)

Sprint Logo was edited, and is not accurate.
The subject says it all. 172.131.214.151 (talk) 00:48, 17 February 2008 (UTC)

History merge request

 * Sprint Corporation->Sprint Nextel Cut/paste moved on August 12 2005. Leave the post Aug 12 edits(redirects and vandalism) at Sprint Corporation. -- Cmjc80 (talk)
 * This one should not be done. The Sprint Nextel article was based upon Sprint Corporation, but also an older version of Sprint Nextel that existed before August 2005. These versions were inadvertently deleted in a previous merge and never restored. I have restored them, so now one can see that the two articles existed simultaneously and were edited apart from each other before 14 Aug, 2005. Therefore, these separate threads should not be merged together. Very good catch. I've been impressed with your finds. Cool Hand Luke 07:43, 17 February 2008 (UTC)

Fair use rationale for Image:Buk nextel logo en.jpg
Image:Buk nextel logo en.jpg is being used on this article. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in this Wikipedia article constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.

Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Fair use rationale guideline is an easy way to ensure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page.

If there is other fair use media, consider checking that you have specified the fair use rationale on the other images used on this page. Note that any fair use images lacking such an explanation can be deleted one week after being tagged, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you.

BetacommandBot (talk) 06:08, 25 February 2008 (UTC)

4G and WiMAX
I corrected the case in several instances to WiMAX (from WiMax and Wimax), added the hyphen to Wi-Fi, and checked proper link to the articles (that no longer redirect from the incorrect form).

The 4G article describes the ITU criteria for 4G and notes that service providers are being pretty loose with calling service deployments 4G even when they don't meet the 100Mb/s mobile / 1Gb/s fixed data rate criteria. Are there public announcements stating that Sprint/Clearwire will be called 4G and that it will meet any standard criteria for 4G? If not there probably should be a statement to this effect, at least until the industry agrees on what 4G actually is. Jpgs (talk) 21:49, 26 May 2008 (UTC)

Unlimited Free Incoming
Looks like they got rid of their unlimited free incoming. I see no mention of it on their web-site.--Ron John (talk) 12:45, 23 July 2008 (UTC)

Treo 800w
Does anyone think the Treo 800w should have its own section like the Instinct? The 800w is an innovative smartphone exclsively carried by Sprint. Granted, it hasn't sold as well as the Instinct, but it still has sold very well amoung business users. Any thoughts? JakeH07 (talk) 21:27, 26 July 2008 (UTC)JakeH07

Image copyright problem with Image:Embarq logo.svg
The image Image:Embarq logo.svg is used in this article under a claim of fair use, but it does not have an adequate explanation for why it meets the requirements for such images when used here. In particular, for each page the image is used on, it must have an explanation linking to that page which explains why it needs to be used on that page. Please check

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Cleanup Tag
I have Reorganized and cleaned up the article and removed lots of weasel words,Ad type Language,Etc.. I have also Removed/Moved Unneeded info. Remove The tag if you think it is Ready for it to be removed. Speer320 (talk) 23:59, 17 September 2008 (UTC)

PCS acronym
This acronym is used in several places across this article. A couple of the companies bought out were called it, but the network which Sprint resells is also called PCS. What does it mean? It should be introduced somewhere. II | (t - c) 02:32, 26 October 2008 (UTC)

It Means Personal Communications Service Speer320 (talk) 02:42, 26 October 2008 (UTC)

This is notable. Article says Sprint could be heading for financial ruin.
Sprint network starting to outgrow its customer base CaribDigita (talk) 08:35, 12 November 2008 (UTC)

Sprint's shares are under $1.65. It could face a stock market de-listing if its shares drops below $1 for too long. CaribDigita (talk) 03:12, 23 December 2008 (UTC)

environmental record
The section Environmental record looks like a cut/paste or like somebody with a COI wrote it. It may just be me, but could somebody look into that. Thanks Griffinofwales (talk) 00:59, 23 March 2009 (UTC)

neutrality questionable
This article fails to discuss the controversy about Sprint "firing" customers who complained "too much". It also fails to discuss why Sprint stock now is rated as junk. 4.249.3.167 (talk) 17:30, 16 November 2009 (UTC)
 * Concur. See Following up on "Sprint 1000" by Tomi Ahonen. -Mardus (talk) 06:42, 15 August 2010 (UTC)

corrections to the early dial-around writeup?
The article states that, to use SPRINT's alternative service for long distance, "A customer was required to have a Private Line connection to one of these switches in order to use the service, and paid an access fee per Private Line. The customer was then billed at 2.6 cents per tenth of a minute increment."

- I, and the trucking company I worked with, signed up with SPRINT in the late 1970s or possibly very early 1980s. They gave out cards with the local SPRINT dial up number, which answered with a second dial tone. You then punched in your ID and the number you wanted.

I haven't yet corrected the article pending further discussion...

No criticism/controversy section?
I assume a company as large as Sprint Nextel must have some "dirty laundry," so to speak. The AT&T and Verizon pages have criticism sections, so why not this one? Ctrlaltdecimate (talk) 03:46, 21 March 2011 (UTC)

 * If you feel something is missing, I encourage you to to research the topic of concern and update the article text, including references from reputable sources. 71.212.93.127 (talk) 04:34, 25 May 2012 (UTC)

Third largest telecommunication?
On century-links page it mentioned third largest telecommunications. — Preceding unsigned comment added by 75.65.109.3 (talk) 01:21, 8 September 2011 (UTC)
 * And here it says "third largest wireless" provider. CenturyLink is a land-line-only company, without a wireless component. So Sprint is the third largest wireless company, while CenturyLink is the third largest land line company (and the third largest overall by in terms of revenue).oknazevad (talk) 01:13, 9 September 2011 (UTC)

Brown Telephone Co.? I'm Baffled
What has Brown got to do with Sprint? What's happened to this article? Tmangray (talk) 04:39, 30 July 2013 (UTC)

Nexus 5 isn't SIM-locked
The article claims that all GSM-capable devices sold by Sprint have an irrevocable SIM lock preventing their use on US GSM carriers.

This is not 100% true; the Google Nexus 5 (D820) is sold by Sprint, with a subsidy, as well as directly by Google. Both versions are identical and work on Sprint's CDMA/LTE network, as well as on US GSM networks like T-Mobile. You can find many reports of users switching their Nexus 5 between Sprint and T-mobile without defeating any kind of SIM-lock.

This may be a special case, because Google clearly used its influence to prevent carriers from altering the device's hardware or software in any way, but I still think it should be noted as an exception. —Moxfyre (ǝɹʎℲxoɯ | contrib) 06:59, 17 August 2014 (UTC)

Wrong Jacob Brown
Under History, under the first section "Foundation and early years", the first line reads "Sprint Corporation traces its origins to the Brown Telephone Company, which was founded in 1899 by Cleyson Brown and Jacob Brown to deploy telephone service to the rural area around Abilene, KS". This is probably accurate, but clicking the link to Jacob Brown sends me to http://en.wikipedia.org/wiki/Jacob_Brown, which is an article about a man who died in 1828, well before he supposedly co-founded the Brown Telephone Company. I'm not sure if there is an article on the right Jacob Brown, but I thought that this was probably wrong. — Preceding unsigned comment added by 75.23.204.187 (talk) 17:12, 7 September 2014 (UTC)

 * Thanks for pointing that out. Since there are no articles yet for either founder, I've removed the optimistic wikilinks for both of them. Anastrophe (talk) 19:23, 7 September 2014 (UTC)

is this where I put that thing... although it's a very small section, the spark section needs help
The Spark part of the page needs help.

Background: LTE is an all-IP network, abandoning the traditional telephony paradigm. VoLTE is the part of the IMS suite of gigantic applications that will allow for LTE telephones to function like traditional telephony equipment. That is, have telephone numbers and DTMF tones. Phone manufacturers are now starting to simplify things on the RF end to make room to be more complicated again. Since LTE was rolled out as a data-only add-on to 3G (before VoLTE was operable), manufacturers included the ability for two radios to operate simultaneously, one for 3G voice, and one for LTE data. It's called SVLTE for Simultaneous Voice & LTE. Responding to pressure from carriers, I presume, or the drive to simplify now that the opportunity is here it seems now manufacturers are making phones that operate one radio instead of 2 concurrently, and it's going to be the new thing going forward. (better for battery, anyhow). 3G AND LTE has become 3G OR LTE.

Result: you can't make a call and use cellular data simultaneously unless that call is going through the same radio your data is: enter VoLTE.

Therefore, how does it follow that not being able to surf the web while talking to someone (??) becomes a disadvantage of the NETWORK? The network, pre during or post-Spark, can communicate with a phone that has 2 radios, one 3G, one LTE concurrently, as written about the Galaxy S3. It's a disadvantage of the phone itself or Sprint not having VoLTE operational at this time. As it stands, the section is misleading and sounds like Sprint's making things worse. The truth is the industry is pushing/moving to LTE-only phones (IMS is an understated privacy issue, but notasoapbox), and Sprint is behind the curve because they don't have VoLTE deployed yet. Additionally, because it says "Spark-enabled phones" but leaves out the fact that VoLTE will effectively replace SVLTE, or that's the direction all phones are going, or that only using one radio saves battery, is misleading.

The section's text also contained technology-related statements that were misleading but I made them more accurate. This "disadvantage" applies to everybody on any US carrier that has a Galaxy S6, for example. The actual disadvantage of the network is that once fully effected, it will give Sprint reason to raise prices (on the basis of improved value). The *problem* is that Sprint doesn't yet have VoLTE like the other carriers. (If Verizon didn't have VoLTE already, we'd see the same complaints from Verizon Galaxy S6 owners; some people that don't want to use VoLTE might complain but that's probably not noteworthy)

Might be better to have what I propose:. VoLTE will, among other things, address the complaints that some people {cite} have made about newer phones on Sprint's network that don't support SVLTE (make wikilink to https://en.wikipedia.org/wiki/LTE_%28telecommunication%29#Voice_calls) by providing both voice and cellular data services simultaneously over LTE.

I think that it would be better to nuke that paragraph from orbit, save for the last sentence. Mention of the problem can be salvaged, (although it should be in a handset or volte deployment section) but before IP changes something on a big name (especially changing something "negative"), IP wants to make a statement of intentions and submit the arguments defending the actions thereof. IP wants to disclaim: IP's closest telephony tie is of being a Verizon customer with a single personal line and hates all telecoms equally - but some more than others.

158.222.171.203 (talk) 03:00, 10 December 2015 (UTC)

Would i put sprints "good works" program under marketing?
I was looking through sprint and they seem to have marketing program called sprint good works. It pretty much talks about sprint's corporate social responsibility. would this be considered public outreach or marketing?172.249.28.15 (talk) 06:44, 6 January 2016 (UTC)

External links modified
Hello fellow Wikipedians,

I have just added archive links to 2 one external links on Sprint Corporation. Please take a moment to review my edit. If necessary, add after the link to keep me from modifying it. Alternatively, you can add to keep me off the page altogether. I made the following changes:
 * Added archive https://web.archive.org/20060619163800/http://www.alltel.com:80/corporate/media/news/06/may/n411may0906a.html to http://alltel.com/corporate/media/news/06/may/n411may0906a.html
 * Added archive https://web.archive.org/20090107123638/http://www.mobilecomment.com/mobile-phones/samsung/samsungs-airave-femtocell-for-sprint.html to http://www.mobilecomment.com/mobile-phones/samsung/samsungs-airave-femtocell-for-sprint.html

When you have finished reviewing my changes, please set the checked parameter below to true to let others know.

Cheers.—cyberbot II  Talk to my owner :Online 09:27, 12 January 2016 (UTC)

Defunct brands?
should it be its own section? Instead of being part of sprint's wireless operations? along with sprint's discontinued networks?108.184.116.128 (talk) 23:39, 12 June 2016 (UTC)

Defunct networks
Can we get rid of sprint's defunct network. i see no point of posting about their iden/wimax technology — Preceding unsigned comment added by 108.184.98.23 (talk) 01:28, 16 March 2018 (UTC)

A Commons file used on this page has been nominated for deletion
The following Wikimedia Commons file used on this page has been nominated for deletion: Participate in the deletion discussion at the. —Community Tech bot (talk) 18:07, 21 January 2019 (UTC)
 * Sprint-102 - front.png

Sprint is still an active subsidiary of T-Mobile
Per SEC filings of TMobile USA, Sprint Corporation is still an active subsidiary and has not been merged into T-Mobile. That may change at some point, but the legal Sprint Corp is still alive. That should be in the article. — Preceding unsigned comment added by 2601:200:4580:D350:9B5:C54B:B481:8B2A (talk) 07:29, 3 August 2020 (UTC)

 * Firstly, do we have a source for this? I looked and could not find any filings from T-Mobile that mention anything about Sprint within the last few days and the brand was just discontinued a day ago. Second, even if this is true, I would not consider them an "active" company anymore as their individual ownership was dissolved months ago and the "subsidiary" has now discontinued accepting any new customers, eliminated it's entire retail footprint, individualized customer service (all T-Mo now), and almost it's entire website except for login for current customers (which is also being switched to myT-Mobile as we speak) and support pages. ~ Dogojosho (talk) 18:33, 3 August 2020 (UTC)

 * Concur on all points, especially the need for updated citations. - BilCat (talk) 18:46, 3 August 2020 (UTC)

title: Talk:Sprint Corporation


text:
Talk:Trajectory

Simplify
what itrajectory in a simpler explanation
 * The opening paragraph is a pretty simple explanation: the path of an object through space.   What sort of explanation are you looking for? Samw 23:47, 1 October 2005 (UTC)

Middle Ages
"To neglect the action of the atmosphere, in shaping a trajectory, would (at best) have been considered a futile hypothesis by practical minded investigators, all through the Middle Ages in Europe."

What's this about? Practical-tminded investigation was not the hallmark of the academics of the Middle Ages and early Renaissance. I would have been nice if they'd written mathematical treatises on, for instance, the proper construction of cathedrals (and it would in principle have been possible from the 13th century on), but they didn't; they left that grubby stuff to the trial and error of engineers. (Three guesses who did write the first treatise on mathematical principles of structures. Hint: he's mentioned in the article.) It's true that they wouldn't consider what happens in a vacuum -- because they knew that Nature abnors a vacuum (Aristotle says so); also, the idea of a vacuum is arguably contrary to religion. We could put in that information to mock the poor old Middle Ages, but I think it's more respectful just to zap the passage entirely. -- Dandrake 08:04, 12 December 2005 (UTC)
 * You're encouraged to re-write this verbiage and other verbiage in the article. While I added most of the equations in the article, the introductory text leaves something to be desired.  Samw 10:09, 12 December 2005 (UTC)

Derivation of Rifleman's rule
I received an email flagging a possible problem in the derivation section of "Uphill/downhill in uniform gravity in a vacuum":

 * Hi Sam,

 * I was using your trajectory page(nice work) and I am having a problem with part of the derivation. Look at the equation that is fourth from the bottom of the page (this equation is correct). The factoring of sin(Theta)/cost(Theta) appears to be done improperly in going to the next equation.

 * Could you check this? If this is true, it would affect your comments on this equation that were made earlier in the article around Equation 11.

 * Mark

My response:
 * Hmm, you seem to be correct.

 * The derivation was my work but equation 11 was taken from equation 1-29 at

 * And certainly the equation for "Rifleman's rule" is an established concept. But you're right, the derivation seems to be incorrect.

 * Maybe over the holidays I'll have time to figure it out &/or look up the referenced text. In the meanwhile, I'm going to post this errata on Wikipedia and see if others can help.   Thanks for contacting me on this and don't hesitate to update the page yourself!

 * Sam

If anyone can help sort this out, that would be greatly appreciated! Samw 04:52, 25 December 2005 (UTC)

Hi Sam,

I have been looking at some references and I think I may know what is going on here. The original reference is known to have many typos (see the book reviews at ).

I believe the equation in error should have a cotangent instead of tangent in one of its terms.
 * $$R_s=R(1-\cot\theta\tan\alpha)\sec\alpha \;$$

I have simulated this situation using an ODE solver and have verified that this equation works and the one in the article does not.

I think I have been able to derive the "Rifleman's Rule" from this expression. It takes a bit of work.

Assume that a rifleman has sighted in his weapon on a flat surface at some range we can call $$R_0$$. Because the bullet travels along a parabola, the bore of the weapon will have an angle with respect to the line of sight (LOS). Let's call this angle $$d\theta$$. We can compute this angle using the following equation.

 * $$R_0=v^2\sin2d\theta/g \approx\ v^2 2d\theta/g $$ for small $$d\theta$$.

When the rifleman attempts to shoot uphill with his weapon zeroed at $$R_0$$, the gun will actually shoot further than expected (as we will see). Assume that when shooting uphill (hill angle =$$\alpha$$), the riflebore is at an angle of $$\alpha + d\theta $$ with respect to gravity. We can write an expression for the bullet point of impact up the hill as follows.

 * $$R_s= \frac{v^2\sin(2(d\theta+\alpha))}{g}(1-\cot(\alpha + d\theta)\tan\alpha)\sec\alpha \;$$

We can approximate $$ 1-\cot(\alpha + d\theta)\tan\alpha)\sec\alpha $$ using a Taylor approximation as shown below.

 * $$R_s= \frac{v^2 2sin(\alpha)cos(\alpha)} {g}\frac{sec^2(\alpha)}{tan^2(\alpha)}d\theta sec(\alpha)$$

After some simplification, we obtain the following expression.

 * $$R_s= R_0 sec(\alpha) $$

Because the $$sec(\alpha)\ge 1$$, we see that the bullet will hit the hill a bit further up than where the weapon was zeroed. This range extension can be eliminated by firing the weapon as if it were being aimed at shorter horizontal distance $$ R_{correction} = R_0 cos(\alpha)$$. The following equation illustrates this point.

 * $$R_s= R_0 sec(\alpha)cos(\alpha)=R_0 $$

Does this seem reasonable? Note that the "Rifleman's rule" is an approximation but probably holds well for typical situations.

Mark

 * Wow, quick analysis. Errata for "Modern Exterior Ballistics" is listed at  but it doesn't list the cot/tan mixup.  Then again, it's not clear that 1-29 came from this book; I only used the webpage I gave and don't actually have the book.  Yes, my own derivation clearly points to cot not tan, so I can't object to you replacing equation 11 in the article with the cot version.  Furthemore the immediate discussion afterwards on downhill firing and critical angles for uphill firing applies (though the critical angle equations will have to be adjusted.)

 * As for derivation of the Rifleman's rule, I unfortunately couldn't follow the "expression for the bullet point of impact up the hill as follows" (though I admit I didn't try very hard). May I suggest a step by step explanation?  Since my derivation is unfortunately clearly wrong, I'm fine with you replacing my explanation right in the article.

 * As a sanity check on the whole affair, I must admit I'm uncomfortable on how a tan/cot mixup in equation 11 can still lead to the same Rifleman's rule. I'm half hoping for a second error in my original explanation of Rifleman's rule so this all makes sense again! Samw 21:27, 26 December 2005 (UTC)

Hi Sam,

I agree with you that a step-by-step development is required. I am new to the Wikipedia, so I am still learning how to do things, like adding a figure (which this derivation desperately needs). Also, I really should look at the original reference.

Thanks for the errata reference. With a little more time, I will try to put something more complete together.

For now, I have been able to solve my immediate problem with the ODE solver. However, an equation-based solution would be more useful to the general public. blacksheep 00:57, 27 December 2005 (UTC)

 * For images and Wikipedia, see How to edit a page. I'd be happy to help in anyway I can. Samw 01:57, 27 December 2005 (UTC)

Hi Sam,

I have found the key issue. The definition of $$\theta $$ in the referenced web article is different than the definition of $$\theta $$ in your work. With the change of variables and a massive amounts of trigonometric simplification, I have been able to show that your work (minus the one error) and the reference work are equivalent.

I prefer your derivation to the reference article (it uses a coordinate rotation that complicates the algebra). However, the derivation in the reference article does allow a simpler path to the "Rifleman's Rule." blacksheep

 * Hmm, so in order to derive Rifleman's rule, we have the choice of "massive amounts of trigonmetric simplication" to get to my version of equation 11 first or a complex derviation using Taylor's series expansion? Sigh.  Now I know why I've never seen a good derivation of Rifleman's rule.  :-)  Thanks for the tidbit. I'll adjust the accuracy-disputed flag in the main article to cover equation 11 as well.  There's no rush on resolving this; it's sat like this for months!  Thanks. Samw 18:42, 28 December 2005 (UTC)

Hum, looking through this page there seems to be entirely to much mathematics. Do we really need derivations of formula in an encyclopedia? It might be better just to show key results. See Manual of Style (mathematics) and some of this might be bordering on Original research. Its also giving a bit too much away to students who have this set as home work! --Pfafrich 22:37, 2 January 2006 (UTC)

 * I'm flattered you think this might be original research! I assume the concern is with Rifleman's rule itself; not the basic trajectory equations.  For Rifleman's rule, I have no objections to this material moving to a separate article on Rifleman's rule.  Let me know if that's your opinion, and I can do that.  There are enough references that clearly this isn't original research.  Thanks to the MoS on proofs; I'll try to isolate the derivations more.  However, I think the basic equations and derivations are common enough that it should be included.  If it's likely to be assigned as homework, all the more reason that this is common enough to be included!  Note that there's still trajectory at an elevation and other variations  that are probably beyond the scope of Wikipedia.

 * Now back to the actual issue that triggered this discussion; any thoughts on the actual derivation of Rifleman's rule? Thanks.  Samw 04:01, 3 January 2006 (UTC)

Its still way to complicated. Heres a simpiler derivation

We know solution is a parabola and hence if we write $$p$$ for the position and $$t$$ for the time we have
 * $$p = ( A t, 0, a t^2 + b t + c )$$

the first and second deriv is
 * $$p' = (A, 0 , 2 a t + b)$$
 * $$p'' = (0,0,2 a)$$

At $$t=0$$ we have
 * $$p=0,\ p'=(v_h,0,v_v),\ p''=(0,0,-g)$$

hence
 * $$A = v_h,\ a = -g/2,\ b = v_v,\ c = 0$$.

Giving eqn of parabola as
 * $$p = (v_h t,0,-0.5 g t^2 + v_v t)\,$$.

To find the (horizontal) range need to find value of t where z-componant of p is zero i.e.
 * $$-0.5 g t^2 + v_v t = (-0.5 g t + v_v) t = 0\,$$

hence soln are at $$t= 0$$ and $$t = 2 v_v / g$$ subs back in eqn for x component of p gives
 * $$R = 2 v_v v_h / g\,$$.

By symetry max height will occur when $$t = v_v/g$$ giving
 * $$p=(v_v v_h / g, 0,0.5 v_v^2 / g)\,$$

To find derivation in terms of angle of inclination $$\theta$$ and speed of projectile $$v$$ we have
 * $$v_h = v \cos(\theta),\ v_v = v \sin(\theta)$$

substituting into eqn for range this gives
 * $$R= 2 v^2 \cos(\theta) \sin(\theta) / g = v^2 \sin(2\theta) / g\,.$$

Note that calling this polar coordinates is not strictly correct, we still use cartesian coords but just express initial conditions in terms of speed and angle.

Really thats all which is needed for entire derivation, the rest can easily be dropped.

To find the rifle mans range we wish to find the intersection of $$p$$ with the curve
 * $$q = (v_h t, 0 , v_h t \tan(\alpha))=t v_h (1,0,\tan(\alpha))\,$$

where $$\alpha$$ is the angle of the hill. (I've parametrised the line by t to make things simpler). Equating the z-components and dividing through by t (OK as t=0 is starting soln)
 * $$v_h \tan(\alpha) = -0.5 g t + v_v\,$$

hence
 * $$t= {2\over g}(v_v - v_h \tan(\alpha))\,$$

this gives
 * $$p={2 v_h \over g} (v_v-v_h \tan(\alpha)) ( 1, 0, \tan(\alpha))$$

the length of this is
 * $$R_s={2 v_h \over g} (v_v-v_h \tan(\alpha)) \sqrt{1+\tan(\alpha)^2}$$

using the trig identity $$1+\tan(\alpha)^2=\sec(\alpha)^2$$ gives
 * $$R_s={2 v_h \over g} (v_v-v_h \tan(\alpha)) \sec(\alpha)$$

Divide by $$R={2 v_h v_v \over g}$$ gives
 * $${R_s \over R} = (1-{v_h\over v_v}\tan(\alpha))\sec(\alpha)$$

Finally
 * $${v_h\over v_v} = {v \cos(\theta)\over v \sin(\theta)}=\cot(\theta)$$

so
 * $${R_s \over R} = (1-\cot(\theta)\tan(\alpha))\sec(\alpha)$$

So I agree its cot not tan. --Pfafrich 14:06, 3 January 2006 (UTC)

 * Sorry I wasn't clear on my question. Yes, User:Ziggle and I came to the same conclusion on the range for uphill/downhill; that equation 11 in article should contain a cot and not a tan.  The outstanding issue is how to derive "Rifleman's rule" given the cot.  Given all the references on Rifleman's rule, I'm pretty sure the rule itself is valid.  Since equation 11 contains a cot, the explanation in the article is no longer valid.  Any suggestions on how to derive Rifleman's rule given the revised equation 11?

 * I see your point now about the overkill in the various derivations. I'll try to find a home for all this in Wikibooks.  Samw 22:20, 3 January 2006 (UTC)

Its a bit late at night for me, so apoligies if this is giberish. Still trying to workout what riflemans rule is all about, (I know some maths but nothing about shooting). One point did occur is that the a good aproximation is $$\sin(\theta) \approx \theta$$ when angle is given in radians. This is a bit more acurate than just saying its zero. This may help some.

I'll have a bash at tiding up the main article tomorrow. Yep it does seem like wikibook would be a good home. --Pfafrich 00:22, 4 January 2006 (UTC)

---

Hi folks,

When Sam and I were discussing this page, I did put together a derivation of the rifleman's rule based on this cotangent version. I have not updated the article because I was concerned that it was a bit much. I have put together a web page that summarizes my work. I am sure it could be simplified, but it reflects how my head was working.

blacksheep 22:49, 5 January 2006 (UTC)

I like it, I certainly some pictures would go well in the main article. A little quible with using $$d\phi$$ d normally stands for infinitesimal derivative. Here you really using it as a difference $$\delta\theta$$ might be more appropriate, as $$\delta$$ is often used for differences.

I've not looked through the maths yet. I'll give it a ponder.

Maybe it time for a new page Riflemans rule, it seems excessive for trajectories. Possible wikibooks? --Pfafrich 00:49, 6 January 2006 (UTC)

Hi folks,

I have never written a Wikibook, but would like to learn. The "rifleman's rule" does seem to be a well known rule that is missing a good, generally available derivation.

blacksheep 04:35, 6 January 2006 (UTC)

 * User:Pfafrich is proposing a Wikipedia article. Just click on the red link Rifleman's rule when you're signed in and start typing!  Unless the article is overwhelming in its detail, I don't think it needs to be moved into Wikibooks.  Wikibooks is for materials deemed outside the scope of a general encyclopedia.  Hopefully tomorrow I'll have time to move the attached multiple derivations for general trajectories over to Wikibooks.  I was thinking of adding it to  and cross-referencing it here.  Samw 04:57, 6 January 2006 (UTC)

 * I've added a reference to Wikibooks in the main article. Samw 15:34, 6 January 2006 (UTC)

New page Rifleman's rule
Theres a reciently created page Rifleman's rule wondering if we should trim this page a bit, to save repeated material. --Salix alba (talk) 14:32, 31 March 2006 (UTC) (was PfafRich)
 * Trim this talk page or the trajectory article? The incline fire section of the article needs fixing.  Length of the talk page is harmless.  Samw 01:06, 1 April 2006 (UTC)

Link I'd like to add
Hello folks I would like to add this link to the article: Projectile Lab. It's a JavaScript based trajectory simulator I wrote that asks the user to calculate aspects of the projectile. Any objections? — Edward Z. Yang (Talk) 21:30, 28 December 2006 (UTC)

 * Added .— Edward Z. Yang (Talk) 21:38, 10 January 2007 (UTC)

Almost incomprehensible
Yow. This page is nearly incomprehensible. Consider doing a rewrite using more English and less math.

The math itself is not consistent. Equation 11 shows cotangent of theta; all the following equations use tangent theta. I assume that cotangent theta is correct, since in the limiting case alpha=theta, the range should be zero. Thus, it looks like everything after equation 11 is wrong.

(looking up at the talk before my post, it looks like you already understand this, but did not correct the page)

I think that a difficulty is that you have never defined whether theta is measured relative to the horizontal, or relative to the surface. I will presume that it is defined relative to the horizontal.

I'm going to delete all the sections that have tan theta instead of cot theta, which is the part between equation 11 and the rifleman's rule. I'm leaving in the rifleman's rule, since I assume it's correct, even though it's not clear how it comes from equation 11.

I find this sentence very difficult to follow: Thus if the shooter attempts to hit the level distance R, s/he will actually hit the slant target. "In other words, pretend that the inclined target is at a horizontal distance equal to the slant range distance multiplied by the cosine of the inclination angle, and aim as if the target were really at that horizontal position."

What in the world are you saying here? The article is about how far a projectile travels. Geoffrey.landis 03:32, 19 March 2007 (UTC)

 * Yes the uphill/downhill section has problems, hence the "disputed" tag. In the meanwhile, can you revert back to the orignal form of equation 11?  The Rifleman's rule article keys off that.  By all means re-write; I haven't had the skill (or time) to correct the error in the derivation. Samw 03:28, 20 March 2007 (UTC)

 * As originally written, equation 11 was clearly, unambiguously wrong. Why exactly do we want to revert to a "original form" that is wrong? Not having it at all would be better than having it wrong, I would think.  If the following material "keys off of" material that is wrong, rather than replacing the right material with wrong material, perhaps we should delete it-- it is only marginally relevant to the discussion of trajectories anyway.  (Another suggestion would be to move all the Rifleman's rule discussion from here to the Rifleman's rule page, and just link that article). Geoffrey.landis 14:04, 29 March 2007 (UTC)

 * I think the derivation is wrong.  Equation 11 is correct per the discussion above.  Hence the disputed tag.  Samw 22:56, 29 March 2007 (UTC)

 * If equation 11 is correct (as you say) then the following equation (which is unnumbered) must be wrong since it has a tangent in the place where equation 11 has a cotangent. So, since we both agree that it is wrong, why do you want to restore it?  Again, I would say that it would be better to have no information than to have wrong information. Geoffrey.landis 02:32, 12 April 2007 (UTC)

Angle of Elevation section addition
Can we consider adding the following to the "Angle of elevation" section? I don't know how exactly to fit it in, but it is an equation solving for angle with differing initial and final heights. g is acceleration of gravity (e.g. 9.8m/s), v is initial velocity, R is desired range, and Delta h is final height minus initial height. It is self-derived and tested, although I am sure someone more important has derived this before. Unfortunately, it would be almost impossible to find an equation like this on google.Geogriffin 23:33, 29 April 2007 (UTC)
 * $$\theta = \arctan({-R \pm \sqrt{R^2 - 4A(A-\Delta h)}\over 2A})$$ where $$A = {-gR^2\over 2V^2}$$

 * Go for it! Just clearly define the terms as I'm not sure what you mean given the terse description above.  Samw 03:14, 30 April 2007 (UTC)

Anticipating the existence of the vacuum?
...by anticipating the existence of the vacuum... Calculating as if the object moves through a vacuum is not the same as anticipating the existance thereof. Rather, what is done is ignoring the friction from the air (drag), since the contribution thereof is often small and the formulae are a lot easier without it. Shinobu 11:04, 12 May 2007 (UTC)
 * Be bold and by all means reword that section. Samw 13:23, 12 May 2007 (UTC)

Range Downhill?
Thus Rs / R is a positive value meaning the range downhill is always further than along level terrain. This makes perfect sense as it is expected that gravity will assist the projectile, giving it greater range.

Isn't the range assisted by the fact that the ground is simply further away? That is, the lower ground gives the projectile more space to drop, which extends the time it is in the air, allowing it to travel further in the x direction. As far as I know gravity doesn't affect horizontal travel aside from limiting air time.

MagLab (talk) 00:21, 1 August 2008 (UTC)

 * Apparently I wrote this 3 years ago. See . Agreed. Feel free to rewrite.  Also, feel free to fix the math problems in that section.  I haven't been able to figure it out these last few years.  Samw (talk) 03:49, 1 August 2008 (UTC)

Real rocket trajectory data?
I would like to have some information about real rocket trajectories. It would be intersteing to see which flight path real rocket systems use. greets, Andreas —Preceding unsigned comment added by 84.128.60.211 (talk) 20:57, 25 October 2008 (UTC)

Wouldn't a direct derivation be more helpful to the reader?
I understand presenting the differential equations that model projectile motion in uniform gravity - but wonder of what help such a contrived derivation could of the equation for the trajectory would be of to the reader. Again the derivation presented assumes a lot of background knowedge - such as "path of the projectile is known to be a parabola"! Well perhaps the editor meant the path is "known" to be a parabola.. given that differntial equations that model it is such.. Anyway.. I propose replacing it with a more direct/simple/elegant algebraic or perhaps even a visual one.

Dilip rajeev (talk) 17:49, 9 March 2009 (UTC)

I am replacing this unnecessarily contrived and incomplete derivation with a simpler one - the reasoning of which I outline below:

Assume the point of launch as the Origin of the right-hand co-ordinate axes - with the x axis along the ground and y along vertical. Seen from a free-fall frame, which at t=0 is at (x,y)=(0,0) - the object would take a path given by y=xtan(thta). The co-ordnates of this free fall frame is given by y=-1/2gt^2 .. where t=x/(v*Cos(thta)). So translating the co-ordinates back to our original frame, we have ....

Dilip rajeev (talk) 17:49, 9 March 2009 (UTC)

No references
This article, as well as the projectile motion article, needs a lot of work, IMHO. I have written a good bit of material for high-school and first-year college students (AP Physics) on the subject of projectile motion. Perhaps I can find the time to adapt some of those handouts to make a more accessible and better-organized article...

Math derivations are loads of fun, I've enjoyed doing that sort of thing for some 40 years, but not in an encyclopedia article (nor in most published articles). If the derivation is important, summarize it in the text and put the details in an appendix. Keep the ideas flowing, don't bog down with math, especially when writing for a general, non-specialist audience. Last I heard, an encyclopedia is not a math, nor physics, textbook... (although, full disclosure, in "my" article on Experimental uncertainty analysis I did put in a derivation of the POE expression, just because it is central to the article and is difficult to find).

For a far more detailed (definitely) and accessible (maybe) treatment of this material, you might like to go to this site and scroll down to and click on the /nikenuke directory. Once in there, click the /projectilePDF directory and a whole bunch of PDF papers will be available. These papers will provide a lot of analysis, some of which is beyond high-school level, but several of them should still be useful. These are not the handouts I mentioned above, those are separate; these are intended more for teachers, to provide the mathematical background details as needed for class preparation. Also, there's a couple of Java sims on projectiles in the /nikenuke directory- click on the respective HTML files. Rb88guy (talk) 01:59, 25 September 2009 (UTC)

 * Thank you for spelling out clearly what many people have been thinking about this article! A properly-written article reflects knowledge, not only of the subject, but also of how articles should be written. We can take them as conventions; we can take them as rules... but we must heed them! The guidelines for how to create a well-written piece in an academic style (or at the very least, aspire to do that) have evolved over many generations—and they are there for good reasons. If you don't know these time-honoured courtesies, then either learn them or leave the piece to be written by someone else! How do you learn them? You look them up! In much the same way as people are expected, by the authors of certain articles, to consult written pieces on Trajectory or laws of motion. Anyone writing anything for consumption by others must learn the basic language needed to write for that audience. Layers of ill-considered, undisciplined drivel, or rivers of equations that are less than rock-solid simply annoys readers of any level of expertise. For those too lazy to learn more than one simple rule, it should be this: Less is more. Nothing will strangle what little gains you make like extraneous reading load. Eliminate it and you have a fighting chance that your audience will ever want to read anything from you again. Aboctok (talk) 20:14, 29 May 2010 (UTC)

Removed incorrect info about two trajectories for the same range.
The article stated: "Physically, this corresponds to a direct shot versus a mortar shot up and over obstacles to the target."

This notion is incorrect. There are two initial angles, theta_0_a and theta_0_b, that have the same range. It makes no difference whether a mortar or a rifle fires the shot. The notion of direct versus indirect fires has no place in kinematics--both are examples of projectile motion, and both are governed by the same rules. "Indirect" and "direct" are military terms, not physics terms.

In reality, maximum range for a given initial velocity occurs when the initial angle of elevation is 45 degrees. In that case, there is only one angle that gives the same range, i.e. 45 degrees. At all other angles of elevation from 0-90 degrees, there are two angles which will give the same range. For those two angles, the absolute value of the difference between said angle and 45 degrees is the same. For example, if all else is equal, and one initial angle is 53 degrees, the absolute value of the difference is 8 degrees. Therefore the corresponding angle is 45-8=37 degrees. So both initial angles 53 degrees and 37 degrees would result in the same range.

Back to the mistaken notion: If you fire your rifle at a 10 degree angle of fire, you could achieve the same range by firing the rifle at an 80 degree angle, but have a plunging trajectory rather than a more direct trajectory, though they would both be parabolas. Of course, this all neglects air resistance, but that isn't covered in this section. Further, when you shoot a rifle, your target is not at the maximum range, which is what the angle of elevation section deals with.

Marktaff (talk) 08:28, 20 October 2010 (UTC)
 * Wasn't that the point the writer of that edit was trying to make? Mortars are designed to use the lofted trajectory, whereas rifles could in theory use both, although the aiming would be very difficult without design changes? Martijn Meijering (talk) 08:56, 20 October 2010 (UTC)
 * The reason mortars are designed to fire at relatively steep angles has nothing to do with the fact that there are two initial angles that yield the same range in a vacuum. Mortars use such steep angles because they are actually used in an atmosphere, not in a vacuum as these equations assume.  In an atmosphere, max range for a small, light projectile (like a bullet) occurs at less than 45 degree elevation, while max range for a large, heavy projectile (like a mortar) occurs at more than 45 degrees. This fact (the effect of the size and mass of the projectile in an atmosphere) is why mortars and rifles typically fire at different elevations. Marktaff (talk) 11:35, 21 October 2010 (UTC)
 * That doesn't contradict what I said, does it? It's interesting to know that one type of gun uses one type of trajectory, and the other type of gun uses the other type of trajectory. We must not mislead people as to the reason and the explanation you gave is helpful. Martijn Meijering (talk) 16:27, 21 October 2010 (UTC)

 * Agreed. The pedagogical objective is to demonstrate there are 2 ways to hit the target.  If mortars & rifles and direct/indirect are confusing to a pure physics student then that's fine to remove.  But please do clearly state there are 2 physical trajectories that are possible. i.e. These are not phantom math solutions.  Samw (talk) 13:37, 20 October 2010 (UTC)
 * It isn't that mortars and rifles are confusing. It is that the mortar analogy just doesn't hold true.  Both mortars and rifles can, and in fact are, used to provide plunging fire on targets behind cover. In my opinion, it is bad form to use atmospheric examples (and then, incorrectly) when trying to explain a phenomenon that only occurs outside any atmosphere, so no wind or drag, and constant gravity. I'm not opposed to the two trajectories in a vacuum bit being fleshed out, but we shouldn't use analogies that convey false information. Perhaps that is a spot where a graphic would do wonders? Marktaff (talk) 11:35, 21 October 2010 (UTC)

2012 comment
The range section ties the range to sin(2theta) is this right? Why 2? Sorry for lack of symbols.

Remove "Factual Accuracy is disputed" warning under Uphill/downhill in uniform gravity in a vacuum?
As an impartial observer who just happened upon this page, I wonder if we still need to have a warning that the factual accuracy is disputed for Equation 11. The derivation provided in the Uphill/downhill in uniform gravity in a vacuum section is based on well-known physics principles, and the math is easy enough for an advanced high school student to comprehend. The warning is not meant to last forever, and it has been almost 10 years since the warning was put in place. I vote to remove it. Jdlawlis (talk) 01:34, 15 October 2017 (UTC)

Physics
motion of the arrow of dartboard M shoaib Akhtar (talk) 16:56, 19 October 2019 (UTC)

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: Talk:Trajectory


text:
User:Maxcap

=I reject the cabal!=

title: User:Maxcap


text:
Kinder

Kinder is the German word for "children"; it may also refer to:

Businesses

 * Kinder, a trademark of Ferrero, an Italian confectioner:
 * Kinder Surprise
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Places

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People

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Other uses

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title: Kinder


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User:Dkasak/Sandbox

Welcome!

Hello,, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few good links for newcomers: I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes (~~); this will automatically produce your name and the date. If you need help, check out Questions, ask me on my talk page, or place  on your talk page and someone will show up shortly to answer your questions. Again, welcome!
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title: User:Dkasak/Sandbox


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Marine transgression

A marine transgression is a geologic event during which sea level rises relative to the land and the shoreline moves toward higher ground, which results in flooding. Transgressions can be caused by the land sinking or by the ocean basins filling with water or decreasing in capacity. Transgressions and regressions may be caused by tectonic events such as orogenies, severe climate change such as ice ages or isostatic adjustments following removal of ice or sediment load.

During the Cretaceous, seafloor spreading created a relatively shallow Atlantic basin at the expense of a deeper Pacific basin. That reduced the world's ocean basin capacity and caused a rise in sea level worldwide. As a result of the sea level rise, the oceans transgressed completely across the central portion of North America and created the Western Interior Seaway from the Gulf of Mexico to the Arctic Ocean.

The opposite of transgression is regression in which the sea level falls relative to the land and exposes former sea bottom. During the Pleistocene Ice Age, so much water was removed from the oceans and stored on land as year-round glaciers that the ocean regressed 120 m, which exposed the Bering land bridge between Alaska and Asia.

Characteristic facies
Sedimentary facies changes may indicate transgressions and regressions and are often easily identified because of the unique conditions required to deposit each type of sediment. For instance, coarse-grained clastics like sand are usually deposited in nearshore, high-energy environments; fine-grained sediments however, such as silt and carbonate muds, are deposited farther offshore, in deeper, lower energy waters.

Thus, a transgression reveals itself in the sedimentary column when there is a change from nearshore facies (such as sandstone) to offshore ones (such as marl), from the oldest to the youngest rocks. A regression will feature the opposite pattern, with offshore facies changing to nearshore ones. The strata represent regressions less clearly, as their upper layers are often marked by an erosional unconformity.

These are both idealized scenarios; in practice identifying transgression or regressions can be more complicated. For instance, a regression may be indicated by a change from carbonates to shale only, or a transgression from sandstone to shale, and so on. Lateral changes in facies are also important; a well-marked transgression sequence in an area where an epeiric sea was deep may be only partial farther away, where the water was shallow. One should consider such factors when interpreting a specific sedimentary column.

title: Marine transgression


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Maldon (disambiguation)

Maldon is a town in Essex, England.

Maldon may also refer to:

Places

 * Maldon District, a local government district based in Maldon, Essex
 * Maldon & Tiptree F.C., an English football club
 * Maldon (UK Parliament constituency)
 * Maldon Marine Lake
 * Battle of Maldon, between English and Viking forces in 991 AD
 * "The Battle of Maldon", an Old English poem inspired by the battle
 * Maldon, New South Wales, a rural locality in Australia
 * Maldon, Victoria, "Australia's First Notable Town"

Other

 * "Maldòn", a 1990 song recorded by Zouk Machine
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title: Maldon (disambiguation)