text:
Volcanoes, list/Nevado del Ruiz

Ruiz, Colombia Volcano
The Locations of this volcano is in Ruiz Colombia, and the time of this eruption is 1995. The eruption erupted Nevado del Ruiz Volcano and because of the ash of this explosive eruption, the ash mixed with water and creates mud flows that are similar to wet cement. This volcano have had also erupted before the 1995 eruption and it happened in 1595 and 1845. This volcano is a strato volcano and was very devastating to the area. Mud flows and ash covered Ruiz, Colombia and caused massive damage to houses and people living there. The volcano was dormant for 140 years before and erupted unexpectedly. Help wasn't reached fast enough to evacuate the people from the harmful eruption of this explosive volcano.

Deaths
The Deaths of the Ruiz, Colombia Volcano was a very large number. The estimate ammount of deaths is 25,000 people. The harmful mud flows and ash caused too much damage to Ruiz, Colombia and destroyed many homes. Said in the last paragraph, help wasn't fast enough to help the people. When help finally arrived, many were dead. Other's were scarred, close to death, and burned with ash. Many of the citizens had to sit in the back of a pick up truck because of the big number of damaged civilians. Some were damaged so badly that citizens had to be pushed onto nets and picked up by helicopters to get immediate help from hospitals nearby that was not destroyed by the volcano.

The After Effects
After the volcano, there were many disasters. The volcanic eruption was basically just lahars or mud flows. The volcano eruption was not as big, but it was on a ice cap. The burning ash from the volcano landed on the cold ice cap and melted the gigantic flood. The flood at the beginning of the mountain went downhill picking up most mud, trees, and everything else that was on the mountain. The volcanic flood destroyed everything in its path to get to the bottom of the mountain. The flood immediately arrived at the city and destroyed the city and its citizens living in it.

Other Information
This volcano basically covered its top with pyroclastic flows and surges. Pumice and earlier rain began to fall and this caused the crater to be slightly enlarged. The eruption caused the summit to be covered with pyroclastic flows. The eruption followed with a steam eruption and pyroclastic material fell onto still snow. Before the explosion, the volcano caused signs of closeness of eruptions. The volcano created small earthquakes, caused many holes near the volcano, and many phreatic explosions.

title: Volcanoes, list/Nevado del Ruiz


text:
User:Perlislove

I am a average person and a Linux enthusiast with a love for Perl.

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

title: User:Perlislove


text:
Talk:Earth-impact events/Discussion

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title: Talk:Earth-impact events/Discussion


text:
Talk:Radiation astronomy/Planets/Sciences

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text:
Talk:Radiation astronomy/Ultraviolets

Popularity - 2019
Wikiversity:Statistics/2019/08
 * 882. 235 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2019/07
 * 883. 235 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2019/06
 * ranking. 186 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2019/05
 * ranking. 117 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2019/04
 * ranking. 95 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2019/03
 * 906. 227 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2019/02
 * ranking. 180 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2019/01
 * 281. 958 Radiation astronomy/Ultraviolets

Popularity - 2018
Wikiversity:Statistics/2018
 * 794. 2885 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/12
 * 230. 1026 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/11
 * 986. 143 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/10
 * 894. 182 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/09
 * 702. 287 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/08
 * 787. 241 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/07
 * ranking. 93 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/06
 * ranking. 86 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/05
 * ranking. 106 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/04
 * 931. 167 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/03
 * 782. 244 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/02
 * ranking. 118 Radiation astronomy/Ultraviolets

Wikiversity:Statistics/2018/01
 * 878. 192 Radiation astronomy/Ultraviolets

title: Talk:Radiation astronomy/Ultraviolets


text:
Teach Yourself Physics

1. Mechanics and Properties of Matter

2. Heat and Temperature

3. Waves and Optics

4. Electricity and Magnetism

5. Modern Physics

title: Teach Yourself Physics


text:
Teach Yourself Physics/Mechanics and Properties of Matter

1. Measurements


text:
User talk:Egm4313.s12.team1.durrance

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Engineering Experience 4: Design a Small Solar Vehicle/2012: Team PM14

Introduction
The Engineering Experience 4 (EE4) for students who major in Electromechanical Egnineering at Group T is bulding a Small Solar Vehicle (SSV). The school provides a solar panel and a DC motor for each team. Every team should design and assemble thier own SSV and take part in a SSV race at the end of this semester.

Team Name
Our team name is Super Solar Speed, which means that our goal is making the most innovative and fastest SSV in this project.

Team Members

 * Atefeh Hosaini (team leader)
 * Koenraad Vanhoutte
 * Lu Hongyang
 * Ji Luxi
 * Mao Huitan
 * Tam Sirikul
 * Michiel Celis

Cooperation Contract
This is to explain the basic information of the team and formulate some rules while working.

Week 1
The coaches introduced the project basically and divided students into different teams. Our team finished Cooperation Contract, Plan of Approach, WBS and Gantt Chart on Friday.

Week 2
A new team member (Michiel Celis) joined in our team. The coaches illustrated the general information about the solar panel and DC motor and gave these stuffs to every team. We determined the m value (diode factor) of our solar panel.

Koenraad Vanhoutte
Koenraad found a transmission system without gears, named Continuous Variable Transmission (CVT) specifically. This kind of system can solve the problem of the interrupted transmission while changing gears and any probable gear ratio can be chosen.

All these researches will be discussed next week.

Week 3
Michiel found a holder of GPS to support the solar panel. The device can attach the solar panel by air pressure. The greatest strengh of this device is that it is very flexible so that is can rotate into different directions. In this way we can improve the flexibility of solar panel to make it suitable for any height of the sun.

We discussed the work that was done lask week. We will order three or four wheels and several bearings from the website that Wanja found.

In the seminar the coach introduced something about gear ratio. We will use Matlab to calculate what gear ratio we will use.

We decided develop two projects in parallel, the normal gearbox and the CVT. The better one will be used.

Week 4
According to the requirements of Case SSV Part 1 and Case Simulink, we divided the total tasks into different parts and distributed them to every team member. These tasks are theoretical and hypothetical. When it comes to the practice, some data might be changed.

We designed the frame of our SSV. The basic idea is using triangle frame since we will make a three-wheel car. The bearings will be set at the altitude of the triangle and at a line which is parallel to the base of the triangle. In this way we can fasten the frame and the holder of solar panel can be fixed on this frame. Three wheels will be connected to three vertexs of this triangle frame. Koenraad has designed this frame on a software afterwards.

Week 5
The seminar of this week is given by Marc Lambaerts from Fatlab and we knew how to contact Fatlab to take some useful materials for the SSV. Besides, someone from the Umicore Solar Team gave us a introduction of the Umicar.

The basic tasks of this week are still Case Simulink and Sase SSV 1. We distributed the total tasks to everyone in detials. Tam,Wanja worked on gear ratio. Mao and Hongyang woked on the Sankey Diagram. Luxi focused on the process report. Koenraad,Machiel and Atefeh paid more attention on the Matlab-Simulink. We tried our best to finish every report. Next week is the deadline of these two cases and then we are going to start Case SSV 2, which is building our SSV in reality.

Week 6
This week we have to finish two important reports, Case SSV Part 1 and Case Simulink. Everyone works hard on his or her own part, especially Tam, Atefeh and Wanja. Some problems happen to the Simulink, they spent a lot of time to solve these problems. Finally we finished everything successfully and the final version of gear ratio is 9. Based on this, we modified our Sankey Diagram report and make every report correspond to each other.

There was no seminar Tuesday. The coach Tan Ye told us some information about these two cases' reports and the individual test after the Easter holiday. From next week on we will bulid our SSV in reality and connect Fatlab for some help. The case SSV Part 2 will be started, too. The leader divided the tasks to everyone basically.

Week 7
Due to the analysis of the solar panel, there was a "optimal point" in the current-voltage diagram, which can provide the maximum power to the car. However, we could not insure that the vehicle was work at this point in reality. In order to make sure that the car can work at this "optimal" region, we looked for the help of Prof.Bienstman on Friday, who introduced some related theories briefly to us and offered a PCB to us, which could be useful in our SSV building.

Wanja is in charge of this mainly and we all can assist him.

Easter Holiday
We did our EE4 project at Fablab the first week of Easter holiday. Koenraad designed different kinds of gears according to the calculation, using some hard plastic as material, which was waste in Fablab.These gears look very suitable for our car, both for the shaft of the motor and the bearing. The connection of gears are tight, hope that they can work well for the car. We use some aluminum bars to make the frame, depending on what we drew in the computer before. The frame is very strong and stiff. And it is quite light. This frame is perfect for our SSV.

Week 8
There was a individual text on Tuesday, which was a theoretical test about Matlab (Simulink) and SSV Part 1. We can use each team's report as references in the test.

Koenraad made a fantastic "DC-motor holder" for our SSV. This holder can be attached to the frame perfectly tightly. And it is not cheap, of course. We assembled bearings and three wheels, which are from Australia, to the frame. Besides, we attached the base plate of the solar-panel-holder to the frame, too. So far the basic model of our SSV was accomplished.

Week 9
The seminar that was given by Pauwel Goethals was about the technical drawing. After that, our coach gave us feedback about the test last week and our first report (SSV Part 1 and Simulink). He introduced what would have to be done in the future, especially SSV Part 2 and some significant deadlines in the schedule. And the track that will be used in the final race is available to test the car.

We made the guiding systems of our car in the lab Module 7. They are four short bearings that are sticked to the vertical aluminum bar in the frame. for the sake of leading the car run in a straight line. We tested our SSV for the first time on the track, and the friction between the guiding system and the track was very big, even the car could not slide down. We have to change the guiding system. What's more, the gears did nit match the car exactly, we had to use other materials to make gears.

Koenraad used some woods to make gears, and they worked better than the plastic ones. In the morning of Thursday, he brought all kinds of gears to school. We did a new guiding system and glued every parts which were done until now to the frame again. We used a battery as power supplier for our car and tested it again. This time the car worked very well, both the guiding system and the gear box. The car only took 6 seconds to finish the whole 14-meter track.

Week 10
There was no seminar Tuesday since there was a holiday of Labors Day.

Last week the coach said the calculation in Sankey Diagram is not correct due to a wrong simulation in Matlab. The parameters we set in Matlab were not correct, such as the radius of wheels is 27 mm instead of 54 mm, and parameters were not consistent in different files. After several trials, we got the correct simulation finally. The optimal gear ratio is 5 instead of 9,which was got preciously. But it is too late to change the car... But anyway, the Sankey Diagram is correct now.

Another problem was happened to the car. One of the short bearings, which was a part of guiding system, was lost. We had to change the design of the guiding system. Koenraad, Mao and Tam did this in Module 7 lab on Friday afternoon. And the car is pretty strong now.

Every team member is working on his or her own part of the report SSV Part 2.

SSV Part 1
Here is the report of SSV Part 1.


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User talk:Okodan2003

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User talk:TiffanyWei

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User talk:GlennHomburg

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User talk:Sven Manguard

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 * Why are you welcoming me to a project that I have never contributed to and have no immediate intention of contributing to? I know you're trying to be friendly and everything, but I've been a Wikipedian for years, I'd prefer if you stop following me trying to be helpful. Sven Manguard (talk) 22:05, 26 February 2012 (UTC)

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User talk:Mwalker

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User talk:Lode012

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Talk:What Matters/Peace of mind, Inner Peace

Add a sub-topic on Meditation
Add a sub-topic here on meditation. Consider advocating Vipassana Meditation, perhaps as described at: http://www.dhamma.org/ --Lbeaumont (talk) 21:26, 26 February 2012 (UTC)


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User talk:JustinFong

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User talk:AndySove

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User talk:XijinChen

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User:Sydneyton

Mount Vesuvius

Mt. Vesuvius is characterized as a "stratovolcano". It is the only volcano in the European mainland to have erupted within the last hundred years. Mount Vesuvius was known for its eruption in AD 79 and was named after the biologist Pliny. Since then, this volcano has erupted more than 50 times. Scientists have studied and prove that this volcano is dormant. Its last eruption was in 1944, but is still capable of erupting.

Location: Mt. Vesuvius is located on the City of Naples

2. After effects: More than ? families were displaced by the eruption. The total damages were ? millions dollars.

3. Deaths: This eruption caused ? deaths and Tsunami. It damaged more than ? acres of land and ? homes

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Category:Resources needing sources from September 2010

List of articles that needs resources


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Category:User ru-2

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User talk:Damapatiyoga

Damapati Yoga™ is a specialized meditative method discovered and named in the United Sates by Dayton L. Snipes in 2011. Currently, Snipes resides in Richmond, Virginia. "The Damapati Yoga™ method resembles the Dhyana meditative state with significant results that differ based on specific requirements", Snipes 2012.--Damapati Yoga 01:06, 27 February 2012 (UTC)

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User:Damapatiyoga

The Damapati Yoga method™ resembles the Dhyana meditative state with significant results that differ based on one specific requirement, that being the Sun as a brain stimuli. The Damapati Yoga method™ could be considered Sun worship. The results of "the method" are still being examined but it is known to visualize the action of serotonin within the participants human cells, only after illumination takes place. This visualization is much like the action of melatonin which is known to facilitate the dream state. The Damapati Yoga method™ which is a specialized meditative method discovered in 2010 and named by Dayton L. Snipes in 2011. Currently, Snipes resides in Richmond, Virginia USA and goes by the name K'ahn al-Baron. Snipes believes The Damapati Yoga method™ is the apocalyptic "Revelation" which is not a religious aspiration but a spiritual reality of an unused, now known, function of the body.

Photoluminescence (Douglas) is the scientific name for light therapy which uses artificial UV Light as a stimuli to increase the bodies defense mechanisms, among other things. K'ahn al-Baron 2013.--Damapati Yoga 01:12, 27 February 2012 (UTC)

title: User:Damapatiyoga


text:
User:Brianwcallaghan/myWork

Project Goal
Build a working example of a Theo Jansen StrandBeest type walking robot, powered possibly by wind.

My First Task
Draw a 3D model of StrandBeest in 123D.

Summary of actual work over first weekend
I began by attempting to learn AutoDesk 123D. Initially, I made some rough drawings and started to get some knowledge under my belt. But, as I tried to grasp the geometry of the mechanism, I felt that I needed something physical and abandoned the 123D for the time and constructed a cardboard mock-up of the leg mechanism instead. I found a great video of a similar prototype someone made from wood. Check that out here. I found lots of other examples of uses for the leg mechanism. If we had more time and I knew how to weld, I would love to try to build one of these

Week1 Narrative
Began work in AutoDesk 123D. My first impression was that it seemed to be an update of Inventor. My knowledge of AutoCAD may actually have been a hindrance. I kept trying to relate the functionality of the program to the way things work in CAD and found the two programs to be quite different.

The drawing tools were similar to AutoCAD, but the layout is different. There is no command prompt which means clicking on a lot of menus and buttons. I prefer the efficiency of typed commands, but I can see the usefulness in some situations. It took me a while to discover the units in the lower right hand corner of the screen. After finding that, I was able to change from cm to inches, etc. Found that drawing on a 2D plane is more effective. Then you can extrude later.

After 4 or 5 hours of experimenting in 123D, I began construction of a working cardboard prototype of on leg pair mechanism. I found geometry for the parts online and cut pieces from a piece of cardstock. I assembled the parts with staples that I cut in half to make pins. This unit did not function very well, so I decided to make another out of better materials.

For my second attempt I used a thicker piece of cardboard, and fixed the whole mechanism to a cardboard back plate. In addition, I used small screws instead of staples to make the joints. However, the screw used to hold the connecting arms to the center wheel/handle for the crank was too small to properly grip and turn. In addition, the screw in the center wheel itself would back out of the back plate after a few turns. Lastly, the screw hole at one joint on the left leg, made the cardboard weak and it would bend forward while turning.

I addressed the issues by replacing the center screw with a flat headed thumb tack that I soldered on the other side of the back plate as a permanent shaft, replacing the crank handle/connector screw with a roofing nail. I put a small dab of solder on the outside of the nail to hole the arms in place and put a cardboard bracket across the entire top section to keep it from bending. The final product works great.

Finally, I tested the walking curve of the leg mechanism. To do this, I tacked my prototype to a corkboard and tacked a piece of plain white paper behind the feet. I then marked with a pen, the point where the foot rested. I turned the crank approximately 15 degrees and marked the new position of the foot. I repeated this process until completing 1 full turn of the wheel. The resulting curve was not the optimal walking curve. It would probably achieve movement, but very small, jerky, and inefficient steps. Learned later from team mate Matthew Wnuk, that the geometry I found was not the same as the measurements on Jansen's own website. Info on Matt's research can be found here; Mwnuk.

My Second Task
For my next task I will complete 2D drawings of the parts needed to assemble our Beest. We will use 12 individual legs/6 pair. These drawings are to be imported into EnRoute software at work (Maryland Sound) and cut from wood on the CNC router. I will attempt to get wood donated to our cause from my employer. If not, we will have to ask the school to procure wood for us.

Summary of actual work over second weekend
I did pretty much what was planned. I drafted the parts for our StrandBeest in AutoCAD 2012. I also learned a little about what I need to do to get the drawings into EnRoute.

Week2 Narrative
I Began by taking the measurements of the parts from Theo Jansen's website. I then derived the angles of the triangles with a triangle solver app on my iPhone. After drawing the parts, I arranged them into a 5 foot by 8 foot rectangle to fit the sheet size for the CNC router.

Some online research and a phone call to a co-worker taught me that I need to save the file as a DXF, which can I did in AutoCAD. I now need to open the .DXF in EnRoute at work and set the toolpath. The MultiCAM router will then cut the parts.

My Third task
I will cut out the parts on the MultiCAM CNC router at work. I will then try to assemble a working set of legs to show the walking curve in class.

Summary of actual work over third weekend
I was able to accomplish everything I planned.

Week3 Narrative
I made the final tweaks to the files for the CNC router to cut. Spent several hours rearranging parts to fit the wood. Once everything was set and the toolpaths were added, I made a test cut with the router. This showed that I needed to add small bridges to hold everything together on the table. With bridges added, I began the cutting of the parts. The bridges were cut by the machine on the second pass, so they would be thin and easy to remove.

I assembled one leg linkage as an example. The geometry seems off. The inner connectors bump into each other during movement.

My Fourth task
Finalize leg mechanism.

Summary of actual work over fourth weekend
Plan was to finalize the leg mech. I think I came close.

Week4 Narrative
Made some changes to turning radius measurement. A slight reduction improved the movement drastically. Made a note of this measurement on all the connector parts.

Complete Project Page
Follow the "project done" format.

title: User:Brianwcallaghan/myWork