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Future

The future is the time after the past and present. Its arrival is considered inevitable due to the existence of time and the laws of physics. Due to the apparent nature of reality and the unavoidability of the future, everything that currently exists and will exist can be categorized as either permanent, meaning that it will exist forever, or temporary, meaning that it will end. In the Occidental view, which uses a linear conception of time, the future is the portion of the projected timeline that is anticipated to occur. In special relativity, the future is considered absolute future, or the future light cone.

In the philosophy of time, presentism is the belief that only the present exists and the future and the past are unreal. Religions consider the future when they address issues such as karma, life after death, and eschatologies that study what the end of time and the end of the world will be. Religious figures such as prophets and diviners have claimed to see into the future. Future studies, or futurology, is the science, art, and practice of postulating possible futures. Modern practitioners stress the importance of alternative and plural futures, rather than one monolithic future, and the limitations of prediction and probability, versus the creation of possible and preferable futures. Predeterminism is the belief that the past, present, and future have been already decided.

The concept of the future has been explored extensively in cultural production, including art movements and genres devoted entirely to its elucidation, such as the 20th-century movement futurism.

In physics

In physics, time is the fourth dimension. Physicists argue that spacetime can be understood as a sort of stretchy fabric that bends due to forces such as gravity. In classical physics the future is just a half of the timeline, which is the same for all observers. In special relativity the flow of time is relative to the observer's frame of reference. The faster an observer is traveling away from a reference object, the slower that object seems to move through time. Hence, the future is not an objective notion anymore. A more modern notion is absolute future, or the future light cone. While a person can move backward or forwards in the three spatial dimensions, many physicists argue you are only able to move forward in time.

One of the outcomes of Special Relativity Theory is that a person can travel into the future (but never come back) by traveling at very high speeds. While this effect is negligible under ordinary conditions, space travel at very high speeds can change the flow of time considerably. As depicted in many science fiction stories and movies (e.g. Déjà Vu), a person traveling for even a short time at near light speed will return to an Earth that is many years in the future.

Some physicists claim that by using a wormhole to connect two regions of spacetime a person could theoretically travel in time. Physicist Michio Kaku points out that to power this hypothetical time machine and "punch a hole into the fabric of space-time" would require the energy of a star. Another theory is that a person could travel in time with cosmic strings.

In philosophy
In the philosophy of time, presentism is the belief that only the present exists, and the future and past are unreal. Past and future "entities" are construed as logical constructions or fictions. The opposite of presentism is 'eternalism', which is the belief that things in the past and things yet to come exist eternally. Another view (not held by many philosophers) is sometimes called the 'growing block' theory of time—which postulates that the past and present exist, but the future does not.

Presentism is compatible with Galilean relativity, in which time is independent of space, but is probably incompatible with Lorentzian/Albert Einsteinian relativity in conjunction with certain other philosophical theses that many find uncontroversial. Saint Augustine proposed that the present is a knife edge between the past and the future and could not contain any extended period of time.

Contrary to Saint Augustine, some philosophers propose that conscious experience is extended in time. For instance, William James said that time is "...the short duration of which we are immediately and incessantly sensible." Augustine proposed that God is outside of time and present for all times, in eternity. Other early philosophers who were presentists include the Buddhists (in the tradition of Indian Buddhism). A leading scholar from the modern era on Buddhist philosophy is Stcherbatsky, who has written extensively on Buddhist presentism: Everything past is unreal, everything future is unreal, everything imagined, absent, mental... is unreal... Ultimately real is only the present moment of physical efficiency [i.e., causation].

In psychology
Human behavior is known to encompass anticipation of the future. Anticipatory behavior can be the result of a psychological outlook toward the future, for examples optimism, pessimism, and hope.

Optimism is an outlook on life such that one maintains a view of the world as a positive place. People would say that optimism is seeing the glass "half full" of water as opposed to half empty. It is the philosophical opposite of pessimism. Optimists generally believe that people and events are inherently good, so that most situations work out in the end for the best. Hope is a belief in a positive outcome related to events and circumstances in one's life. Hope implies a certain amount of despair, wanting, wishing, suffering or perseverance—i.e., believing that a better or positive outcome is possible even when there is some evidence to the contrary. "Hopefulness" is somewhat different from optimism in that hope is an emotional state, whereas optimism is a conclusion reached through a deliberate thought pattern that leads to a positive attitude.

Pessimism as stated before is the opposite of optimism. It is the tendency to see, anticipate, or emphasize only bad or undesirable outcomes, results, or problems. The word originates in Latin from Pessimus meaning worst and Malus meaning bad.

In religion
Religions consider the future when they address issues such as karma, life after death, and eschatologies which consider what the end of time and the end of the world will be like. In religion, major prophets are said to have the power to change the future. Common religious figures have claimed to see into the future, such as minor prophets and diviners.

The term "afterlife" refers to the continuation of existence of the soul, spirit or mind of a human (or animal) after physical death, typically in a spiritual or ghostlike afterworld. Deceased persons are usually believed to go to a specific region or plane of existence in this afterworld, often depending on the rightness of their actions during life.

Some believe the afterlife includes some form of preparation for the soul to transfer to another body (reincarnation). The major views on the afterlife derive from religion, esotericism and metaphysics. There are those who are skeptical of the existence of the afterlife, or believe that it is absolutely impossible, such as the materialist-reductionists, who believe that the topic is supernatural, therefore does not really exist or is unknowable. In metaphysical models, theists generally, believe some sort of afterlife awaits people when they die. Atheists generally do not believe in a life after death. Members of some generally non-theistic religions such as Buddhism, tend to believe in an afterlife like reincarnation but without reference to God.

Agnostics generally hold the position that like the existence of God, the existence of supernatural phenomena, such as souls or life after death, is unverifiable and therefore unknowable. Many religions, whether they believe in the soul's existence in another world like Christianity, Islam and many pagan belief systems, or in reincarnation like many forms of Hinduism and Buddhism, believe that one's status in the afterlife is a reward or punishment for their conduct during life, with the exception of Calvinistic variants of Protestant Christianity, which believe one's status in the afterlife is a gift from God and cannot be earned during life.

Eschatology is a part of theology and philosophy concerned with the final events in the Human history, or the ultimate destiny of humanity, commonly referred to as the end of the world. While in mysticism the phrase refers metaphorically to the end of ordinary reality and reunion with the Divine, in many traditional religions it is taught as an actual future event prophesied in sacred texts or folklore. More broadly, eschatology may encompass related concepts such as the Messiah or Messianic Age, the end time, and the end of days.

In grammar
In grammar, actions are classified according to one of the following twelve verb tenses: past (past, past continuous, past perfect, or past perfect continuous), present (present, present continuous, present perfect, or present perfect continuous), or future (future, future continuous, future perfect, or future perfect continuous). The future tense refers to actions that have not yet happened, but which are due, expected, or may occur in the future. For example, in the sentence, "She will walk home," the verb "will walk" is in the future tense because it refers to an action that is going to, or may, happen at a point in time beyond the present.

Verbs in the future continuous tense indicate actions that will happen beyond the present and will continue for a period of time. In the sentence, "She will be walking home," the verb phrase "will be walking" is in the future continuous tense because the action described is not happening now, but will happen sometime afterwards and is expected to continue happening for some time. Verbs in the future perfect tense indicate actions that will be completed at a particular point in the future. For example, the verb phrase, "will have walked," in the sentence, "She will have walked home," is in the future perfect tense because it refers to an action that is completed as of a specific time in the future. Finally, verbs in the future perfect continuous tense combine the features of the perfect and continuous tenses, describing the future status of actions that have been happening continually from now or the past through to a particular time in the future. In the sentence, "She will have been walking home," the verb phrase "will have been walking" is in the future perfect continuous tense because it refers to an action that the speaker anticipates will be finished in the future.

Another way to think of the various future tenses is that actions described by the future tense will be completed at an unspecified time in the future, actions described by the future continuous tense will keep happening in the future, actions described by the future perfect tense will be completed at a specific time in the future, and actions described by the future perfect continuous tense are expected to be continuing as of a specific time in the future.

Linear and cyclic culture
The linear view of time (common in Western thought) draws a stronger distinction between past and future than does the more common cyclic time of cultures such as India, where past and future can coalesce much more readily.

Futures studies

Futures studies or futurology is the science, art, and practice of postulating possible, probable, and preferable futures and the worldviews and myths that underlie them. Futures studies seek to understand what is likely to continue, what is likely to change, and what is novel. Part of the discipline thus seeks a systematic and pattern-based understanding of past and present, and to determine the likelihood of future events and trends. A key part of this process is understanding the potential future impact of decisions made by individuals, organizations, and governments. Leaders use the results of such work to assist in decision-making.

"Take hold of the future or the future will take hold of you."

Futures is an interdisciplinary field, studying yesterday's and today's changes, and aggregating and analyzing both lay and professional strategies, and opinions with respect to tomorrow. It includes analyzing the sources, patterns, and causes of change and stability in the attempt to develop foresight and to map possible futures. Modern practitioners stress the importance of alternative and plural futures, rather than one monolithic future, and the limitations of prediction and probability, versus the creation of possible and preferable futures.

Three factors usually distinguish futures studies from the research conducted by other disciplines (although all disciplines overlap, to differing degrees). First, futures studies often examines not only possible but also probable, preferable, and "wild card" futures. Second, futures studies typically attempts to gain a holistic or systemic view based on insights from a range of different disciplines. Third, futures studies challenges and unpacks the assumptions behind dominant and contending views of the future. The future thus is not empty but fraught with hidden assumptions.

Futures studies do not generally include the work of economists who forecast movements of interest rates over the next business cycle, or of managers or investors with short-term time horizons. Most strategic planning, which develops operational plans for preferred futures with time horizons of one to three years, is also not considered futures. But plans and strategies with longer time horizons that specifically attempt to anticipate and be robust to possible future events, are part of a major subdiscipline of futures studies called strategic foresight.

The futures field also excludes those who make future predictions through professed supernatural means. At the same time, it does seek to understand the model's such groups use and the interpretations they give to these models.

Forecasting
Forecasting is the process of estimating outcomes in uncontrolled situations. Forecasting is applied in many areas, such as weather forecasting, earthquake prediction, transport planning, and labour market planning. Due to the element of the unknown, risk and uncertainty are central to forecasting.

Statistically based forecasting employs time series with cross-sectional or longitudinal data. Econometric forecasting methods use the assumption that it is possible to identify the underlying factors that might influence the variable that is being forecast. If the causes are understood, projections of the influencing variables can be made and used in the forecast. Judgmental forecasting methods incorporate intuitive judgments, opinions, and probability estimates, as in the case of the Delphi method, scenario building, and simulations.

Prediction is similar to forecasting but is used more generally, for instance, to also include baseless claims on the future. Organized efforts to predict the future began with practices like astrology, haruspicy, and augury. These are all considered to be pseudoscience today, evolving from the human desire to know the future in advance.

Modern efforts such as futures studies attempt to predict technological and societal trends, while more ancient practices, such as weather forecasting, have benefited from scientific and causal modelling. Despite the development of cognitive instruments for the comprehension of future, the stochastic and chaotic nature of many natural and social processes has made precise forecasting of the future elusive.

Futurism
Futurism as an art movement originated in Italy at the beginning of the 20th century. It developed largely in Italy and in Russia, although it also had adherents in other countries—in England and Portugal for example. The Futurists explored every medium of art, including painting, sculpture, poetry, theatre, music, architecture, and even gastronomy. Futurists had passionate loathing of ideas from the past, especially political and artistic traditions. They also espoused a love of speed, technology, and violence. Futurists dubbed the love of the past passéisme. The car, the plane, and the industrial town were all legendary for the Futurists because they represented the technological triumph of people over nature. The Futurist Manifesto of 1909 declared: "We will glorify war—the world's only hygiene—militarism, patriotism, the destructive gesture of freedom-bringers, beautiful ideas worth dying for, and scorn for woman." Though it owed much of its character and some of its ideas to radical political movements, it had little involvement in politics until the autumn of 1913.

Futurism in Classical Music arose during this same time period. Closely identified with the central Italian Futurist movement were brother composers Luigi Russolo (1885–1947) and Antonio Russolo (1877–1942), who used instruments known as intonarumori—essentially sound boxes used to create music out of noise. Luigi Russolo's futurist manifesto, "The Art of Noises", is considered one of the most important and influential texts in 20th-century musical aesthetics. Other examples of futurist music include Arthur Honegger's "Pacific 231" (1923), which imitates the sound of a steam locomotive, Prokofiev's "The Steel Step" (1926), Alexander Mosolov's "Iron Foundry" (1927), and the experiments of Edgard Varèse.

Literary futurism made its debut with F.T. Marinetti's Manifesto of Futurism (1909). Futurist poetry used unexpected combinations of images and hyper-conciseness (not to be confused with the actual length of the poem). Futurist theater works have scenes a few sentences long, use nonsensical humor, and try to discredit the deep-rooted dramatic traditions with parody. Longer literature forms, such as novels, had no place in the Futurist aesthetic, which had an obsession with speed and compression.

Futurism expanded to encompass other artistic domains and ultimately included painting, sculpture, ceramics, graphic design, industrial design, interior design, theatre design, textiles, drama, literature, music and architecture. In architecture, it featured a distinctive thrust towards rationalism and modernism through the use of advanced building materials. The ideals of futurism remain as significant components of modern Western culture; the emphasis on youth, speed, power and technology finding expression in much of modern commercial cinema and commercial culture. Futurism has produced several reactions, including the 1980s-era literary genre of cyberpunk—which often treated technology with a critical eye.

Science fiction

More generally, one can regard science fiction as a broad genre of fiction that often involves speculations based on current or future science or technology. Science fiction is found in books, art, television, films, games, theater, and other media. Science fiction differs from fantasy in that, within the context of the story, its imaginary elements are largely possible within scientifically established or scientifically postulated laws of nature (though some elements in a story might still be pure imaginative speculation). Settings may include the future, or alternative time-lines, and stories may depict new or speculative scientific principles (such as time travel or psionics), or new technology (such as nanotechnology, faster-than-light travel or robots). Exploring the consequences of such differences is the traditional purpose of science fiction, making it a "literature of ideas".

Some science fiction authors construct a postulated history of the future called a "future history" that provides a common background for their fiction. Sometimes authors publish a timeline of events in their history, while other times the reader can reconstruct the order of the stories from information in the books. Some published works constitute "future history" in a more literal sense—i.e., stories or whole books written in the style of a history book but describing events in the future. Examples include H.G. Wells' The Shape of Things to Come (1933)—written in the form of a history book published in the year 2106 and in the manner of a real history book with numerous footnotes and references to the works of (mostly fictitious) prominent historians of the 20th and 21st centuries.

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Dennis Conner

Dennis Walter Conner  (born September 16, 1942) is an American yachtsman. He is noted for winning a bronze medal at the 1976 Olympics, two Star World Championships, and three wins in the America's Cup.

Sailing career
Conner was born September 16, 1942, in San Diego. He competed in the 1976 Olympics together with Conn Findlay and took the bronze medal in the Tempest class. Conner also took part in the 1979 Admiral's Cup, as helmsman on the Peterson 45 named Williwaw.

America's Cup
Conner has won the America's Cup three times, successfully defending the Cup in 1980, and 1988 and winning as the challenger in 1987. His 4–3 loss in 1983 to Australian Alan Bond's wing-keeled challenger Australia II was the first Cup defender to be defeated in the 132-year history of the race, simultaneously ending a run by the New York Yacht Club that began with the first contest. Following the loss Conner formed his own syndicate, the Sail America Foundation, through which he raised funds to mount a challenge on behalf of the San Diego Yacht Club, culminating with winning the Cup back from Australia in 1987. Conner's 1983 loss and the subsequent 1987 victory are the basis of the 1992 American Zoetrope film Wind.

The Big Boat Challenge and the beginning of multihulls in America's Cup
Representing the San Diego Yacht Club (SDYC), Conner's Sail America Foundation faced another controversial challenger in 1988, backed by New Zealand banker Michael Fay. Fay's team abandoned the 12-meter format that had prevailed since the pre-WW II demise of the massive and fantastically expensive J-sloops, and challenged with a huge and unconventional 90' super-sloop (KZ1). Conner responded with an even more controversial 60' wing-sailed catamaran (US-1) in a surprise defense.

Fay's challenge and legal case based on the Deed foreshadowed the controversial 33rd America's Cup, whose legal wrangling resulted in the contest being decided in enormous multihulls in February 2010, while returning to the pre-war style of exclusive, billionaire backed campaigns of Alinghi and BMW Oracle Racing.

Leadership and management
Before the 1980s, America's Cup competitors were mostly amateurs who took time off from their regular jobs to compete. Conner insisted on year round training with a new focus on physical fitness and practice. This change in approach led to a return to professional crews in sailing, which had hardly been seen since the 1930s.

Funding and setbacks
Perhaps due to the bad media attention surrounding the 1988 catamaran defense, Conner had insufficient funding to mount a multiple-boat defense in 1992, which also heralded the debut of the IACC yacht. His USA-11 proved no match to Bill Koch's America3 campaign. USA-11 was built as a test-bed for design ideas that were to be incorporated into the "racing" boat, nicknamed TDC-2. However, TDC-2 was never built. Its ideas were incorporated into his single-boat campaign for 1995, and the yacht Stars & Stripes USA-34. After almost sinking during The Citizen Cup defender trials, USA-34 went on to a come-from-behind win over Mighty Mary, earning the right to defend The Cup against Team New Zealand's Black Magic, NZL-32. Believing Stars & Stripes was no match against the Black Magic, Dennis Conner swapped boats for the Cup matches, pitting Young America against New Zealand's Black Magic NZL–32. But the result was a humiliating defeat for Dennis Conner, losing to Team New Zealand 0–5.

Conner again found difficulty securing funding for the 2000 America's Cup in Auckland, New Zealand. As in 1992 and 1995, he mounted a single-boat campaign centered upon Stars & Stripes USA-55. Conner was eliminated in the quarter final repechage by Craig McCaw's OneWorld Challenge.

Conner was a rare non-billionaire fielding a team to compete in the 2003 America's Cup, held in New Zealand, receiving funding of up to US$40 million from his sponsors. His syndicate, Stars & Stripes, suffered a severe setback before they departed California, as one of the two Stars & Stripes boats (USA-77) sank when its rudder post failed during training. Despite raising the boat from 55 feet of water and eventually repairing it, they were unable to recover the valuable testing time lost and they were defeated in the quarter-finals of the Louis Vuitton Cup.

2003 marked Conner's last participation in the America's Cup.

Yachting accomplishments

 * 3-time winner, America's Cup, 1980, 1987 and 1988
 * 2-time loser, America's Cup, 1983 and 1995
 * Inductee, America's Cup Hall of Fame
 * Captain, two Whitbread Round-the-World races (On boat Winston in 1993-94 and on boat Toshiba 1997–98.) (see Volvo Ocean Race)
 * 28 World Championships
 * Three-time winner, U.S. Yachtsman of the Year: 1975, 1980 and 1986
 * Seven-time winner, San Diego Yachtsman of the Year
 * Olympic Bronze Medal winner, 1976
 * 4 Southern Ocean Racing Cups
 * 2 Congressional Cups
 * 1987 ABC Wide World of Sports Athlete of the Year
 * National Sailing Hall of Fame Founding Inductee in 2011
 * Maxi yacht racing
 * One of only four American sailors inducted into the ISAF Sailing Hall of Fame
 * 2-time winner Etchells World Championship (1991 San Francisco, 1994 Newport Beach)

Honors and activities

 * Honorary doctorate from Green Mountain College, 1987
 * Honorary doctorate from the Medical College of the University of South Carolina, 1987
 * America's Greatest Sailor, US Sailing's Greatest American Sailor Tournament
 * Commencement speaker, United States Naval Academy
 * Cover of Time magazine, February 9, 1987
 * Cover of Sports Illustrated with President Ronald Reagan, February 1987
 * Artist, sales of artwork in the several millions of dollars
 * Motivational speaker
 * Member of the San Diego Yacht Club, (Silvergate Yacht Club), New York Yacht Club, Yacht Club de Monaco
 * San Diego Rotary

Education

 * Bachelor's degree from San Diego State University

Publications

 * No Excuse to Lose, 1987
 * Comeback: My Race for the America's Cup, 1987
 * Learn to Sail: A Beginner's Guide to the Art, Equipment and Language of Sailing on a Lake or Ocean, 1998
 * The America's Cup: The History of Sailings Greatest Competition in the Twentieth Century, 1998
 * The Art of Winning, 1990
 * Sail Like a Champion, 1992
 * America's Cup Cookbook, 1992
 * Life's Winning Tips, 1997

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

title: Dennis Conner


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Ethane

Ethane is a naturally occurring organic chemical compound with chemical formula. At standard temperature and pressure, ethane is a colorless, odorless gas. Like many hydrocarbons, ethane is isolated on an industrial scale from natural gas and as a petrochemical by-product of petroleum refining. Its chief use is as feedstock for ethylene production.

Related compounds may be formed by replacing a hydrogen atom with another functional group; the ethane moiety is called an ethyl group. For example, an ethyl group linked to a hydroxyl group yields ethanol, the alcohol in beverages.

History
Ethane was first synthesised in 1834 by Michael Faraday, applying electrolysis of a potassium acetate solution. He mistook the hydrocarbon product of this reaction for methane and did not investigate it further. The process is now called Kolbe electrolysis:
 * CH3COO− → CH3• + CO2 + e−
 * CH3• + •CH3 → C2H6

During the period 1847–1849, in an effort to vindicate the radical theory of organic chemistry, Hermann Kolbe and Edward Frankland produced ethane by the reductions of propionitrile (ethyl cyanide) and ethyl iodide with potassium metal, and, as did Faraday, by the electrolysis of aqueous acetates. They mistook the product of these reactions for the methyl radical (CH3), of which ethane (C2H6) is a dimer.

This error was corrected in 1864 by Carl Schorlemmer, who showed that the product of all these reactions was in fact ethane. Ethane was discovered dissolved in Pennsylvanian light crude oil by Edmund Ronalds in 1864.

Properties
At standard temperature and pressure, ethane is a colorless, odorless gas. It has a boiling point of -88.5 °C and melting point of -182.8 °C. Solid ethane exists in several modifications. On cooling under normal pressure, the first modification to appear is a plastic crystal, crystallizing in the cubic system. In this form, the positions of the hydrogen atoms are not fixed; the molecules may rotate freely around the long axis. Cooling this ethane below ca. 89.9 K changes it to monoclinic metastable ethane II (space group P 21/n). Ethane is only very sparingly soluble in water.

The bond parameters of ethane have been measured to high precision by microwave spectroscopy and electron diffraction: rC−C = 1.528(3) Å, rC−H = 1.088(5) Å, and ∠CCH = 111.6(5)° by microwave and rC−C = 1.524(3) Å, rC−H = 1.089(5) Å, and ∠CCH = 111.9(5)° by electron diffraction (the numbers in parentheses represents the uncertainties in the final digits).

Rotating a molecular substructure about a twistable bond usually requires energy. The minimum energy to produce a 360° bond rotation is called the rotational barrier.

Ethane gives a classic, simple example of such a rotational barrier, sometimes called the "ethane barrier". Among the earliest experimental evidence of this barrier (see diagram at left) was obtained by modelling the entropy of ethane. The three hydrogens at each end are free to pinwheel about the central carbon–carbon bond when provided with sufficient energy to overcome the barrier. The physical origin of the barrier is still not completely settled, although the overlap (exchange) repulsion between the hydrogen atoms on opposing ends of the molecule is perhaps the strongest candidate, with the stabilizing effect of hyperconjugation on the staggered conformation contributing to the phenomenon. Theoretical methods that use an appropriate starting point (orthogonal orbitals) find that hyperconjugation is the most important factor in the origin of the ethane rotation barrier.

As far back as 1890–1891, chemists suggested that ethane molecules preferred the staggered conformation with the two ends of the molecule askew from each other.

Atmospheric and extraterrestrial

Ethane occurs as a trace gas in the Earth's atmosphere, currently having a concentration at sea level of 0.5 ppb. Global ethane quantities have varied over time, likely due to flaring at natural gas fields. Global ethane emission rates declined from 1984 to 2010, though increased shale gas production at the Bakken Formation in the U.S. has arrested the decline by half.

Although ethane is a greenhouse gas, it is much less abundant than methane, has a lifetime of only a few months compared to over a decade, and is also less efficient at absorbing radiation relative to mass. In fact, ethane's global warming potential largely results from its conversion in the atmosphere to methane. It has been detected as a trace component in the atmospheres of all four giant planets, and in the atmosphere of Saturn's moon Titan.

Atmospheric ethane results from the Sun's photochemical action on methane gas, also present in these atmospheres: ultraviolet photons of shorter wavelengths than 160 nm can photo-dissociate the methane molecule into a methyl radical and a hydrogen atom. When two methyl radicals recombine, the result is ethane:

 * CH4 → CH3• + •H
 * CH3• + •CH3 → C2H6

In Earth's atmosphere, hydroxyl radicals convert ethane to methanol vapor with a half-life of around three months.

It is suspected that ethane produced in this fashion on Titan rains back onto the moon's surface, and over time has accumulated into hydrocarbon seas covering much of the moon's polar regions. In mid-2005, the Cassini orbiter discovered Ontario Lacus in Titan's south polar regions. Further analysis of infrared spectroscopic data presented in July 2008 provided additional evidence for the presence of liquid ethane in Ontario Lacus. Several significantly larger hydrocarbon lakes, Ligeia Mare and Kraken Mare being the two largest, were discovered near Titan's north pole using radar data gathered by Cassini. These lakes are believed to be filled primarily by a mixture of liquid ethane and methane.

In 1996, ethane was detected in Comet Hyakutake, and it has since been detected in some other comets. The existence of ethane in these distant solar system bodies may implicate ethane as a primordial component of the solar nebula from which the sun and planets are believed to have formed.

In 2006, Dale Cruikshank of NASA/Ames Research Center (a New Horizons co-investigator) and his colleagues announced the spectroscopic discovery of ethane on Pluto's surface.

Chemistry
The chemistry of ethane involves chiefly free radical reactions. Ethane can react with the halogens, especially chlorine and bromine, by free-radical halogenation. This reaction proceeds through the propagation of the ethyl radical:
 * C2H5• + Cl2 → C2H5Cl + Cl•
 * Cl• + C2H6 → C2H5• + HCl

The combustion of ethane releases 1559.7 kJ/mol, or 51.9 kJ/g, of heat, and produces carbon dioxide and water according to the chemical equation:
 * 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O + 3120 kJ

Combustion may also occur without an excess of oxygen, yielding carbon monoxide, acetaldehyde, methane, methanol, and ethanol. At higher temperatures, especially in the range 600 - 900 °C, ethylene is a significant product:
 * 2 C2H6 + O2 → 2 C2H4 + H2O

Such oxidative dehydrogenation reactions are relevant to the production of ethylene.

Production
After methane, ethane is the second-largest component of natural gas. Natural gas from different gas fields varies in ethane content from less than 1% to more than 6% by volume. Prior to the 1960s, ethane and larger molecules were typically not separated from the methane component of natural gas, but simply burnt along with the methane as a fuel. Today, ethane is an important petrochemical feedstock and is separated from the other components of natural gas in most well-developed gas fields. Ethane can also be separated from petroleum gas, a mixture of gaseous hydrocarbons produced as a byproduct of petroleum refining.

Ethane is most efficiently separated from methane by liquefying it at cryogenic temperatures. Various refrigeration strategies exist: the most economical process presently in wide use employs a turboexpander, and can recover more than 90% of the ethane in natural gas. In this process, chilled gas is expanded through a turbine, reducing the temperature to approximately −100 °C. At this low temperature, gaseous methane can be separated from the liquefied ethane and heavier hydrocarbons by distillation. Further distillation then separates ethane from the propane and heavier hydrocarbons.

Usage
The chief use of ethane is the production of ethylene (ethene) by steam cracking. When diluted with steam and briefly heated to very high temperatures (900 °C or more), heavy hydrocarbons break down into lighter hydrocarbons, and saturated hydrocarbons become unsaturated. Ethane is favored for ethylene production because the steam cracking of ethane is fairly selective for ethylene, while the steam cracking of heavier hydrocarbons yields a product mixture poorer in ethylene and richer in heavier alkenes (olefins), such as propene (propylene) and butadiene, and in aromatic hydrocarbons.

Experimentally, ethane is under investigation as a feedstock for other commodity chemicals. Oxidative chlorination of ethane has long appeared to be a potentially more economical route to vinyl chloride than ethylene chlorination. Many processes for producing this reaction have been patented, but poor selectivity for vinyl chloride and corrosive reaction conditions (specifically, a reaction mixture containing hydrochloric acid at temperatures greater than 500 °C) have discouraged the commercialization of most of them. Presently, INEOS operates a 1000 t/a (tonnes per annum) ethane-to-vinyl chloride pilot plant at Wilhelmshaven in Germany.

Similarly, in 2005, the Saudi Arabian firm SABIC launched a 34,000 t/a plant at Yanbu to produce acetic acid by ethane oxidation. The economic viability of this process may rely on the low cost of ethane near Saudi oil fields, and it may not be competitive with methanol carbonylation elsewhere in the world.

Ethane can be used as a refrigerant in cryogenic refrigeration systems. On a much smaller scale, in scientific research, liquid ethane is used to vitrify water-rich samples for cryo-electron microscopy. A thin film of water quickly immersed in liquid ethane at −150 °C or colder freezes too quickly for water to crystallize. Slower freezing methods can generate cubic ice crystals, which can disrupt soft structures by damaging the samples and reduce image quality by scattering the electron beam before it can reach the detector.

MAN Energy Solutions currently manufactures two-stroke dual fuel engines (B&W ME-GIE) which can run on both Marine diesel oil and ethane.

Health and safety
At room temperature, ethane is an extremely flammable gas. When mixed with air at 3.0%–12.5% by volume, it forms an explosive mixture.

Some additional precautions are necessary where ethane is stored as a cryogenic liquid. Direct contact with liquid ethane can result in severe frostbite. Until they warm to room temperature, the vapors from liquid ethane are heavier than air and can flow along the floor or ground, gathering in low places; if the vapors encounter an ignition source, the chemical reaction can flash back to the source of ethane from which they evaporated.

Ethane can displace oxygen and become an asphyxiation hazard. Ethane poses no known acute or chronic toxicological risk. It is not a carcinogen.

title: Ethane


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Steeleye Span

Steeleye Span are a British folk rock band formed in 1969 in England by Fairport Convention bass player Ashley Hutchings and established London folk club duo Tim Hart and Maddy Prior. The band were part of the 1970s British folk revival, and were commercially successful in that period, with four Top 40 albums and two hit singles: "Gaudete" and "All Around My Hat".

Steeleye Span have seen many personnel changes, with Maddy Prior being the only remaining original member of the band. Their musical repertoire consists of mostly traditional songs with one or two instrumental tracks of jigs and/or reels added; the traditional songs often include some of the Child Ballads. In their later albums there has been an increased tendency to include music written by the band members, but they have never moved completely away from traditional music, which draws upon pan-British traditions.

Early years
Steeleye Span began in late 1969, when London-born bass player Ashley Hutchings left Fairport Convention, the band he had co-founded in 1967. Fairport had been involved in a road accident in 1969 in which the drummer, Martin Lamble, and guitarist Richard Thompson's girlfriend, Jeannie Franklyn, were killed and other band members injured. The survivors convalesced in a rented house near Winchester in Hampshire and worked on the album Liege & Lief. Despite the success of the album, Ashley Hutchings and the band's vocalist Sandy Denny left Fairport Convention.

In part, Hutchings departed because he wanted to pursue a different, more traditional, direction than the other members of Fairport did at that time. Fairport's co-founder, guitarist Simon Nicol, stated "Whatever the upfront reasons about musical differences and wanting to concentrate on traditional material, I think the accident was the underlying reason why Ashley felt he couldn't continue with us."

Hutchings's new band was formed after he met established duo Tim Hart and Maddy Prior on the London folk club scene, and the initial line-up was completed by husband and wife team Terry Woods (formerly of Sweeney's Men, later of The Pogues) and Gay Woods. The name Steeleye Span comes from a character in the traditional song "Horkstow Grange" (which they did not actually record until they released an album by that name in 1998). The song gives an account of a fight between John "Steeleye" Span and John Bowlin, neither of whom is proven to have been a real person. Martin Carthy gave Hart the idea to name the band after the song character. When the band discussed names, they decided to choose among the three suggestions "Middlemarch Wait", "Iyubidin's Wait", and "Steeleye Span". Although there were only five members in the band, six ballots appeared and "Steeleye Span" won. Only in 1978 did Hart confess that he had voted twice. The liner notes for their first album include thanks to Carthy for the name suggestion.

With two female singers, the original line-up was unusual for the time, and indeed, never performed live, as the Woodses departed the band shortly after the release of the group's debut album, Hark! The Village Wait (1970). While recording the album, the five members were all living in the same house, an arrangement that produced considerable tensions particularly between Hart and Prior on the one hand and the Woodses on the other. Terry Woods maintains that the members had agreed that if more than one person departed, the remaining members would select a new name, and he was upset that this did not happen when he and Gay Woods left the band. Gay and Terry were replaced by veteran folk musician Martin Carthy and fiddler Peter Knight in a longer-term line-up that toured small concert venues, recorded a number of BBC Radio Sessions, and recorded two albums – Please to See the King (1971) and Ten Man Mop, or Mr. Reservoir Butler Rides Again (1971). While the first album was traditionally performed – guitars, bass and with two guest drummers – Please to See the King was revolutionary in its hard electric sound and lack of drums.

In 1971, the then Steeleye Span line-up minus Maddy Prior contributed to two songs on Scottish folk musician Ray Fisher's album The Bonny Birdy; Martin Carthy and Ashley Hutchings were also involved in the selection and arrangement of some songs released on this album, whilst Ashley Hutchings wrote the sleeve notes. Furthermore, Martin Carthy and Peter Knight performed on four songs released on Roy Bailey's eponymous debut album in 1971.

A new direction
Shortly after the release of their third album, the band brought in manager Jo Lustig, who brought a more commercial sound to their recordings. At that time, traditionalists Carthy and Hutchings left the band to pursue purely folk projects. Their replacements were electric guitarist Bob Johnson and bass player Rick Kemp, who brought strong rock and blues influences to the sound. Rick Kemp subsequently married Maddy Prior and they had two children before divorcing. Their daughter Rose Kemp and their son Alex (who performs as Kemp) both followed their parents into the music industry.

Lustig signed them to the Chrysalis record label, for a deal that was to last for ten albums.

With the release of their fourth album, Below the Salt, later in 1972, the revised line-up had settled on a distinctive electrified rock sound, although they continued to play mostly arrangements of very traditional material, including songs dating back a hundred years or more. Even on the more commercial Parcel of Rogues (1973), the band had no permanent drummer; however, in 1973, rock drummer Nigel Pegrum, who had previously recorded with Gnidrolog, The Small Faces and Uriah Heep, joined them, to harden up their sound (as well as occasionally playing flute and oboe).

Also that year the single "Gaudete" from Below the Salt became a Christmas hit single, reaching number 14 in the UK Singles Chart, although, being an a cappella piece, taken from the late renaissance song collection Piae Cantiones from Finland and sung entirely in Latin, this can neither be considered representative of the band's music, nor of the album from which it was taken. This proved to be their commercial breakthrough and saw them performing on Top of the Pops for the first time. They often include it as a concert encore. Their popularity was also helped by the fact that they often performed as an opening act for fellow Chrysalis artists Jethro Tull. The Canadian single had "Royal Forester" as the b-side, and that song reached #10 on the RPM AC charts.

Their sixth album (and sixth member Pegrum's first with the band) was entitled Now We Are Six. Produced by Jethro Tull's Ian Anderson, the album includes the epic track "Thomas the Rhymer", which has been a part of the live set ever since. Although successful, the album is controversial among some fans for the inclusion of nursery rhymes sung by "The St. Eeleye School Choir" (band members singing in the style of children), and the cover of "To Know Him Is to Love Him", featuring a guest appearance from David Bowie on saxophone.

The attempts at humour continued on Commoners Crown (1975), which included Peter Sellers playing electric ukulele on the final track, "New York Girls". Their seventh album also included the epic ballad "Long Lankin" and novelty instrumental "Bach Goes To Limerick".

Mike Batt era
With their star now conspicuously ascendant, the band brought in producer Mike Batt to work on their eighth album, All Around My Hat, and their biggest success came with the release of the title track as a single – it reached number 5 in the UK Singles Chart in late 1975. The single was also released in other European countries and gave them a breakthrough in the Netherlands and Germany. Other well-known tracks on the album included "Black Jack Davy" (sampled by rappers Goldie Lookin Chain on their track "The Maggot") and the rocky "Hard Times of Old England". While All Around My Hat was the height of the band's commercial success, the good times were not to last long. Despite touring almost every year since 1975, they have not had another hit single, nor any success in the album chart, since the late 1970s.

The follow-up album, Rocket Cottage (1976), also produced by Batt, proved to be a commercial flop, despite having much in common musically with its predecessor. The opening track, "London", was penned by Rick Kemp as a follow-up to "All Around My Hat", in response to a request from the record label that Kemp describes as "we'll have another one of those, please", and released as a single. The song failed to make the UK Chart, in complete contrast to "All Around My Hat", despite having much in common – a 12/8 time signature, upbeat tempo, solo verses and full harmony chorus. Rocket Cottage also included the experimental track "Fighting for Strangers" (with sparse vocals singing concurrently in a variety of keys) and, on the final track, excerpts of studio banter between the band members and a seemingly impromptu rendition of "Camptown Races", in which Prior gets the lyrics wrong.

At the time of their seventh album, Commoners Crown, the advent of punk saw the mainstream market turning away from folk rock almost overnight, heralding a downturn in commercial fortunes for the band. As thanks to their committed fans, Steeleye Span showered attendees of a November 1976 concert in London with £8,500 in pound notes (then equivalent to US$13,600). The unannounced idea was Maddy Prior's and, remarkably, no-one was injured in the rush to grab the falling notes. Contemporary press reports indicated that it took some time for the crowd to even realise what was happening. Thanks to their connection with Mike Batt, band members appeared in Womble costumes on Top of the Pops, performing the Wombles hit "Superwomble".

Late 1970s and early 1980s
While they never regained the commercial success of All Around My Hat, Steeleye remained popular among British folk rock fans and generally respected within the music industry. It has been widely reported that Peter Knight and Bob Johnson left the band to work on another project together, The King of Elfland's Daughter. The actual situation was more complex. Chrysalis Records agreed to allow Knight and Johnson to work on "King" only as a way to persuade the duo to continue working with Steeleye. Since the record company had no interest in "King" for its own sake, it made no effort to market the album. Chrysalis' ploy failed and Knight and Johnson quit.

Their departure left a significant hole in the band. For the 1977 album, Storm Force Ten, early member Martin Carthy rejoined on guitar. When he originally joined the band for their second album, Carthy had tried to persuade the others to bring John Kirkpatrick on board but the band had chosen Knight instead. This time, Carthy's suggestion was accepted and Kirkpatrick's accordion replaced Knight's fiddle, which gave the recording a very different texture from the Steeleye sound of previous years. Kirkpatrick's one-man morris dances quickly became one of the highlights of the band's show. This line-up also recorded their first album outside of the studio, Live at Last, before a "split" at the end of the decade that proved to be short-lived. Carthy and Kirkpatrick had only intended to play with the band for a few months and had no interest in a longer association.

During 1977 and some time thereafter, Nigel Pegrum and Rick Kemp created a "porno punk" band called The Pork Dukes, using pseudonyms. The Pork Dukes released several albums and singles over the years.

The band were contractually obliged to record a final album for the Chrysalis label and, with Carthy and Kirkpatrick not wanting to rejoin the re-formed band, the door was open for Knight and Johnson to return, in 1980. The album Sails of Silver saw the band moving away from traditional material to a greater focus on self-penned songs, many with historical or pseudo-folk themes. Sails was not a commercial success, in part because Chrysalis chose not to promote the album aggressively but also because many fans felt uncomfortable with the band's new direction in its choice of material. The failure of the album left Hart unhappy enough that he decided to leave the band. He later gave up commercial music entirely, in favour of a reclusive life in the Canary Islands.

After Sails of Silver there were to be no new albums for several years, and Steeleye became a part-time touring band. The other members spent much of their time and energy working on their various other projects and the band went into a fitful hibernation. "Sails of Silver" was used as a theme song for the science fiction literary show "Hour of The Wolf", on NYC radio station WBAI 99.5FM since the 1980s. This introduced many younger US listeners to the band.

In 1981 Isla St Clair presented a series of four television programmes, called "The Song and The Story", about the history of some folk songs, which won the Prix Jeunesse. St Clair sang the songs, and The Maddy Prior Band did the backing instrumentals.

Wilderness years
For much of the 1980s, the members of the band tended to focus on outside projects of various sorts. Johnson opened a restaurant and then studied for a degree in psychology at the University of Hertfordshire. Pegrum ran a music studio. Prior and Kemp devoted much energy to their own band (The Maddy Prior Band; see Maddy Prior (solo albums)), recording four albums, and also had children together. The result was that the band's output dropped sharply, producing only three albums over the space of ten years (including a concert album), although the band continued touring.

After a quiet spell, the group's 12th studio album (and first without Tim Hart) Back in Line was released on the Flutterby label in 1986. With no "relaunch" as such, the band retained a low profile, although they covered "Blackleg Miner" (a composition to support an 1844 strike revised many times by folk artists in the 20th century) to show solidarity with striking miners. Some argued this became a political anthem for the NUM during the miners' strike of 1984–5 and was used to intimidate working miners. Steeleye Span continued to perform the song live and included a different version on their 1986 release Back in Line, which some claim puts greater stress on the line that threatens death against blacklegs.

In 1989, two long-term members departed. One was bassist Rick Kemp, who needed to recover from a serious shoulder injury, exacerbated by playing bass on stage. His eventual replacement (after two tours, each with a different bassist) was Tim Harries, who was brought in less than two weeks before the band was scheduled to start a tour. A friend of Pegrum's, Harries was a self-taught rock bassist, as well as a classically trained pianist and double bassist. With Harries on board, Steeleye released Tempted and Tried (1989), an album that formed the basis for their live set for many years to come.

Not long after recording Tempted, drummer Nigel Pegrum emigrated to Australia for personal relationship reasons. He was replaced by eccentric drummer Liam Genockey (most recently of rock band Gillan), easily identified by his long, plaited beard. He and Knight were simultaneously members of "Moiré Music", a free-jazz band with a classical flavour, led by Trevor Watts. Unlike Pegrum, who employed a traditional rock drumming style, Genockey favoured a more varied drumming style, influenced by both Irish and African drumming, in which he hit, brushed, and rubbed the various surfaces of his drums and cymbals, creating a more varied range of sounds. Consequently, when the band embarked on their 20th Anniversary Tour, they did so with a totally new rhythm section.

Both Harries and Genockey were interested in experimenting with the band's sound, and they helped re-energise the other members' interest in Steeleye. The band began reworking some of their earlier material, seeking new approaches to traditional favourites. For example, Johnson experimented with an arrangement of "Tam Lin", that involved a heavy Bulgarian influence, inspired by Eastern European versions of the Tam Lin legend. In 1992 the band released Tonight's the Night...Live, which demonstrates some of this new energy and direction. The band continued to tour the UK every year, and frequently toured overseas as well.

Maddy 'leaves the bus'
In 1995 almost all the past and present members of the band reunited for a concert to celebrate the 25th Anniversary of the band (which was later released as The Journey). The only former members not present were founding members Terry Woods, Mark Williamson, and Chris Staines.

A by-product of this gig was founding vocalist Gay Woods rejoining the band full-time, partly because Prior was experiencing vocal problems and, for a while, Steeleye toured with two female singers and released the album Time 1996, their first new studio album in seven years.

There were doubts over the future of the band when Prior announced her departure in 1997, but Steeleye continued in a more productive vein than for many years, with Woods as lead singer, releasing Horkstow Grange (1998), and then Bedlam Born (2000). Fans of Steeleye's "rock" element felt that Horkstow Grange was too quiet and folk-oriented, while fans of the band's "folk" element complained that Bedlam Born was too rock-heavy. Woods received considerable criticism from fans, many of whom did not realise that she was one of the founding members and who compared her singing style unfavourably to Prior's. There was also disagreement among the band about what material to perform; Woods advocated performing old favourites such as "All Around My Hat" and "Alison Gross", while Johnson favoured a set that emphasised their newer material.

Liam Genockey had also left the band in 1997 and, on these albums, the drum kit was manned by Dave Mattacks, who was not an official member of the band.

Breakup and comeback
Reported difficulties among band members saw a split during the recording of Bedlam Born. Woods reportedly was uncomfortable with the financial arrangements of the band, health problems forced Johnson into retirement, and drummer Dave Mattacks' period as an unofficial member came to an end. Rick Kemp resumed playing with the band as a guest replacing Bob Johnson for the Bedlam Born tour, with Harries switching to lead guitar. Woods then left after this tour.

For a while the band consisted of just Peter Knight and Tim Harries, plus various guest musicians, as they fulfilled live commitments. This was an uncertain time for the future of the band, and when Harries announced he was not keen to continue his role, even the willingness of Kemp to return to the line-up full-time was not enough to prevent an 18-month hiatus while Peter Knight and the band's manager, John Dagnell, considered whether it was worth continuing.

In 2002 Steeleye Span reformed with a "classic" line-up (including Prior), bringing an end to the uncertainty of the previous couple of years. Knight hosted a poll on his website, asking fans which Steeleye songs they most wanted to see the band rerecord. Armed with the results, Knight persuaded Prior and Genockey to rejoin, coaxed Johnson out of a health-induced retirement and, along with Kemp and Knight, they released Present—The Very Best of Steeleye Span (2002), a 2-disc set of new recordings of the songs.

Bob Johnson's health issues prevented him from playing live, shortly before the 2002 comeback tour, and he was replaced at the eleventh hour on guitar by Ken Nicol, formerly of the Albion Band. Nicol had been talking with Rick Kemp about forming a band, when Kemp invited him to play for the tour and this was to herald a significant return to form for the band.

Ken Nicol years
A revitalised lineup consisting of Prior, Kemp, Knight, Genockey and newcomer Ken Nicol released the album They Called Her Babylon early in 2004, to considerable acclaim. The band extensively toured the UK, Europe and Australia, and their relatively prolific output continued with the release of the Christmas album Winter later the same year, as the band ended a busy year of touring with a gala performance in London's Palladium theatre. In 2005 Steeleye Span were awarded the Good Tradition Award at the BBC Radio 2 Folk Awards, while the 2005 book, Electric Folk by Britta Sweers devotes much space to the band.

With a new sense of purpose and a stable line-up, the band carried out a UK tour in April and May 2006, followed by dates in Europe and an appearance at the 2006 Cropredy Festival, where they were the headline act on the opening night. The set started with "Bonny Black Hare" and finished with "All Around My Hat", with backing vocals from the Cropredy Crowd. The tour was supported by a live album and DVD of their 2004 tour.

In November 2006 Steeleye released their studio album Bloody Men. Their Autumn/Winter tour started on 24 November 2006 in Basingstoke and ran until just before Christmas. They headlined at their namesake festival, Spanfest 2007 at Kentwell Hall, Suffolk from 27 to 29 July 2007, and returned for Spanfest 2008. As Kentwell Hall declined to hold the festival again, it was held at Stanford Hall in Leicestershire. A UK tour took place between 17 April and 16 May 2008.

For their 40th anniversary tour, in 2009, Pete Zorn joined the line-up on bass, as Rick Kemp was unwell. Kemp and Zorn both toured with the band for the winter tour that year, with Zorn playing guitar, and Kemp announced that he would retire at the end of the tour – a decision he later reversed, as usual.

Live at a Distance, a live double CD and DVD set, was released in April 2009 by Park Records, and their new studio album entitled Cogs, Wheels & Lovers was released on 26 October 2009. Several tracks from this album featured in the sets of the autumn tour.

Founding member Tim Hart died on 24 December 2009, at his home in La Gomera on the Canary Islands, at the age of 61, after being diagnosed with inoperable lung cancer.

Now We Are Six Again / Wintersmith
In June 2010 Ken Nicol announced that he was leaving Steeleye and the band reassembled for a Spring 2011 tour, with Julian Littman joining the line-up as guitarist, replacing Nicol. Multi-instrumentalist Pete Zorn also continued to play with the band, making them a six-piece for the first time in many years.

In 2011 they released Now We Are Six again, a live double album based on their set at the time, which included full performances of all the songs on their 1974 Now we are Six album.

In October 2013 the band released their 22nd studio album, Wintersmith, containing original songs based on the writings of Terry Pratchett. This was followed by a winter tour of the UK. This album marked a return to form and media attention as the album reached number 77 in the UK Albums Chart, had tracks played on BBC Radio 2 and led to various radio and TV interviews for Terry Pratchett and Maddy Prior as they promoted the album.

Following Pratchett's death, in March 2015, the band made an appearance at the memorial service for him, in April 2016, at Barbican Centre, London.

Peter Knight leaves / Dodgy Bastards album
Peter Knight left Steeleye Span at the end of 2013. He was replaced by Jessie May Smart. The band continued to tour regularly and recorded four new tracks for the 2014 'Deluxe' re-release of the Wintersmith album.

In the summer of 2015 they toured North America, with a reduced line up consisting of Prior, Littman, Smart, Genockey and, for the first time, Maddy's son, Alex Kemp, on bass, replacing his father, Rick. An autumn/winter tour of the UK followed with Rick Kemp back in the line-up, along with Andrew 'Spud' Sinclair, replacing Pete Zorn.

In April 2016 Pete Zorn was diagnosed with advanced lung and brain cancer. He died on 19 April.

Andrew Sinclair joined the band permanently in 2016 and the line up toured in October 2016 and announced the release of a new studio album, Dodgy Bastards, in November. The album is a mixture of original compositions, traditional songs and original tunes put to traditional lyrics.

Present day / 50th anniversary
After completing the 'Dodgy Bastards' tour, Rick Kemp retired and has been replaced by Roger Carey, on bass. For the November/December 2017 tour the band was joined by multi-instrumentalist and ex-Bellowhead member Benji Kirkpatrick. Benji is son of former Steeleye Span member, John Kirkpatrick. This seven-piece line-up was the first in the band's history. 2019 was the band's 50th anniversary year and a new album was released to celebrate the anniversary: Est'd 1969. The band undertook two "50th Anniversary" tours in 2019, in Spring and Winter. The band played the 'Avalon Stage' at the Glastonbury Festival 2019, were a closing act at the Cornbury Music Festival 2019 and even made their debut in Russia at a folk festival called Chasti Sveta (Части света, Parts of the World), in Saint Petersburg. On 17 December they appeared at the Barbican Theatre, in London, with special guests and previous band members Peter Knight, Martin Carthy and John Kirkpatrick.

For the November/December 2021 tour, the first post-Covid tour, Benji Kirkpatrick was absent due to 'personal reasons' and with Jessie May Smart still on maternity leave, Violeta Vicci joined the band, on violin. This same line up toured in May and October 2022. Benji Kirkpatrick left the band officially in February 2022 due to other commitments and has not been replaced.

Steeleye Span continued celebrating 50 years since the release of their classic Folk Rock albums by touring throughout November and December 2023, including a concert at the Cadogan Hall in London on 18 December 2023.

Examples of collaborations
Prior sang backing vocals on the title track of Jethro Tull's 1976 album Too Old To Rock and Roll, Too Young To Die, the song "Salamander's Rag-Time" from the same session and their 1978 single "A Stitch In Time". Later, members of Jethro Tull backed Prior on her album Woman in the Wings. Ray Fisher's rare 1972 album Bonny Birdy includes one track with the High Level Ranters, one with Steeleye Span, and one with Martin Carthy.

Until the 1990s Steeleye often toured as part of a double bill, either supporting Status Quo, or featuring support from artists such as Rock Salt & Nails and The Rankin Family. When Steeleye Span supported Status Quo on tour, in 1996, the latter had just issued their version of "All Around My Hat" as a single. "The video was filmed at Christmas," Prior recalled. "We'd supported them, and I found myself down in the mosh pit. Francis saw me and told the audience, 'Oh look, there's a Maddy lookalike down there… Fuck me, it is Maddy!' I was hoyed over the barrier [to the stage], to join them for the encore. It was all very jolly." Status Quo's single is credited to "Status Quo with Maddy Prior from Steeleye Span" and reached number 47 in the charts.

Members
Current members
 * Maddy Prior – vocals, percussion, banjo (1969–1978, 1980–1997, 2002–present)
 * Liam Genockey – drums, percussion (1989–1997, 2002–present)
 * Andrew "Spud" Sinclair – guitars, vocals (2015–present)
 * Julian Littman – guitars, mandolin, keyboards, vocals (2010–present)
 * Jessie May Smart – violin, vocals (2014–present)
 * Roger Carey – bass, vocals (2017–present)
 * Violeta Vicci – violin (2019–present)
 * Athena Octavia - violin, vocals (2023-present)

Studio albums

 * Hark! The Village Wait (1970)
 * Please to See the King (1971)
 * Ten Man Mop, or Mr. Reservoir Butler Rides Again (1971)
 * Below the Salt (1972)
 * Parcel of Rogues (1973)
 * Now We Are Six (1974)
 * Commoners Crown (1975)
 * All Around My Hat (1975)
 * Rocket Cottage (1976)
 * Storm Force Ten (1977)
 * Sails of Silver (1980)
 * Back in Line (1986)
 * Tempted and Tried (1989)
 * Time (1996)
 * Horkstow Grange (1998)
 * Bedlam Born (2000)
 * Present – The Very Best of Steeleye Span (2002)
 * They Called Her Babylon (2004)
 * Winter (2004)
 * Bloody Men (2006)
 * Cogs, Wheels and Lovers (2009)
 * Wintersmith (2013)
 * Dodgy Bastards (2016)
 * Est'd 1969 (2019)

Unreleased material
In 1995 Steeleye recorded "The Golden Vanity" for the Time album, but it did not appear on it. It was released on the anthology The Best of British Folk Rock. Similarly they recorded "General Taylor" for Ten Man Mop but the song did not appear on it. It resurfaced on the compilation album Individually and Collectively instead. It was also included in another compilation The Lark in The Morning (2006), as well as re-issues of Ten Man Mop. "Bonny Moorhen" was recorded at the time of the Parcel of Rogues session. It is included on the compilation album Original Masters, and packaged as part of A Parcel of Steeleye Span. The song "Somewhere in London", recorded for Back in Line (1986) was released instead as a B-side single, but returned to its proper place "Back in Line" when the album was reissued in 1991. "Staring Robin", a song about a man described by Tim Harries as an "Elizabethan psycho", was recorded during the Bedlam Born (2000) sessions, but it was left off the final album as it was deemed by Park Records to be too disturbing.

The track "The Holly and the Ivy" was released as the B-side of the Gaudete single and did not appear on any album. It was later released on the 'Steeleye Span: A rare collection' oddities compilation. Several Steeleye songs have never been recorded for a studio album and have only been made available in their live versions, including several tracks on 'Live at Last' and 'Tonight's the night... Live'.

title: Steeleye Span


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Interest rate

An interest rate is the amount of interest due per period, as a proportion of the amount lent, deposited, or borrowed (called the principal sum). The total interest on an amount lent or borrowed depends on the principal sum, the interest rate, the compounding frequency, and the length of time over which it is lent, deposited, or borrowed.

The annual interest rate is the rate over a period of one year. Other interest rates apply over different periods, such as a month or a day, but they are usually annualized.

The interest rate has been characterized as "an index of the preference . . . for a dollar of present [income] over a dollar of future income." The borrower wants, or needs, to have money sooner, and is willing to pay a fee—the interest rate—for that privilege.

Influencing factors
Interest rates vary according to:
 * the government's directives to the central bank to accomplish the government's goals
 * the currency of the principal sum lent or borrowed
 * the term to maturity of the investment
 * the perceived default probability of the borrower
 * supply and demand in the market
 * the amount of collateral
 * special features like call provisions
 * reserve requirements
 * compensating balance

as well as other factors.

Example
A company borrows capital from a bank to buy assets for its business. In return, the bank charges the company interest. (The lender might also require rights over the new assets as collateral.)

A bank will use the capital deposited by individuals to make loans to their clients. In return, the bank should pay interest to individuals who have deposited their capital. The amount of interest payment depends on the interest rate and the amount of capital they deposited.

Related terms
Base rate usually refers to the annualized effective interest rate offered on overnight deposits by the central bank or other monetary authority.

The annual percentage rate (APR) may refer either to a nominal APR or an effective APR (EAPR). The difference between the two is that the EAPR accounts for fees and compounding, while the nominal APR does not.

The annual equivalent rate (AER), also called the effective annual rate, is used to help consumers compare products with different compounding frequencies on a common basis, but does not account for fees.

A discount rate is applied to calculate present value.

For an interest-bearing security, coupon rate is the ratio of the annual coupon amount (the coupon paid per year) per unit of par value, whereas current yield is the ratio of the annual coupon divided by its current market price. Yield to maturity is a bond's expected internal rate of return, assuming it will be held to maturity, that is, the discount rate which equates all remaining cash flows to the investor (all remaining coupons and repayment of the par value at maturity) with the current market price.

Based on the banking business, there are deposit interest rate and loan interest rate.

Based on the relationship between supply and demand of market interest rate, there are fixed interest rate and floating interest rate.

Monetary policy
Interest rate targets are a vital tool of monetary policy and are taken into account when dealing with variables like investment, inflation, and unemployment. The central banks of countries generally tend to reduce interest rates when they wish to increase investment and consumption in the country's economy. However, a low interest rate as a macro-economic policy can be risky and may lead to the creation of an economic bubble, in which large amounts of investments are poured into the real-estate market and stock market. In developed economies, interest-rate adjustments are thus made to keep inflation within a target range for the health of economic activities or cap the interest rate concurrently with economic growth to safeguard economic momentum.

History
In the past two centuries, interest rates have been variously set either by national governments or central banks. For example, the Federal Reserve federal funds rate in the United States has varied between about 0.25% and 19% from 1954 to 2008, while the Bank of England base rate varied between 0.5% and 15% from 1989 to 2009, and Germany experienced rates close to 90% in the 1920s down to about 2% in the 2000s. During an attempt to tackle spiraling hyperinflation in 2007, the Central Bank of Zimbabwe increased interest rates for borrowing to 800%.

The interest rates on prime credits in the late 1970s and early 1980s were far higher than had been recorded – higher than previous US peaks since 1800, than British peaks since 1700, or than Dutch peaks since 1600; "since modern capital markets came into existence, there have never been such high long-term rates" as in this period.

Possibly before modern capital markets, there have been some accounts that savings deposits could achieve an annual return of at least 25% and up to as high as 50%. (William Ellis and Richard Dawes, "Lessons on the Phenomenon of Industrial Life... ", 1857, p III–IV)

Reasons for changes
[[File:Interest rates.webp|thumb|350px|Prime rate floats about 3% above the federal funds rate

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 * Political short-term gain: Lowering interest rates can give the economy a short-run boost. Under normal conditions, most economists think a cut in interest rates will only give a short term gain in economic activity that will soon be offset by inflation. The quick boost can influence elections. Most economists advocate independent central banks to limit the influence of politics on interest rates.
 * Deferred consumption: When money is loaned the lender delays spending the money on consumption goods. Since according to time preference theory people prefer goods now to goods later, in a free market there will be a positive interest rate.
 * Inflationary expectations: Most economies generally exhibit inflation, meaning a given amount of money buys fewer goods in the future than it will now. The borrower needs to compensate the lender for this.
 * Alternative investments: The lender has a choice between using his money in different investments. If he chooses one, he forgoes the returns from all the others. Different investments effectively compete for funds.
 * Risks of investment: There is always a risk that the borrower will go bankrupt, abscond, die, or otherwise default on the loan. This means that a lender generally charges a risk premium to ensure that, across his investments, he is compensated for those that fail.
 * Liquidity preference: People prefer to have their resources available in a form that can immediately be exchanged, rather than a form that takes time to realize.
 * Taxes: Because some of the gains from interest may be subject to taxes, the lender may insist on a higher rate to make up for this loss.
 * Banks: Banks can tend to change the interest rate to either slow down or speed up economy growth. This involves either raising interest rates to slow the economy down, or lowering interest rates to promote economic growth.
 * Economy: Interest rates can fluctuate according to the status of the economy. It will generally be found that if the economy is strong then the interest rates will be high, if the economy is weak the interest rates will be low.

Real versus nominal
The nominal interest rate is the rate of interest with no adjustment for inflation.

For example, suppose someone deposits $100 with a bank for one year, and they receive interest of $10 (before tax), so at the end of the year, their balance is $110 (before tax). In this case, regardless of the rate of inflation, the nominal interest rate is 10% per annum (before tax).

The real interest rate measures the growth in real value of the loan plus interest, taking inflation into account. The repayment of principal plus interest is measured in real terms compared against the buying power of the amount at the time it was borrowed, lent, deposited or invested.

If inflation is 10%, then the $110 in the account at the end of the year has the same purchasing power (that is, buys the same amount) as the $100 had a year ago. The real interest rate is zero in this case.

The real interest rate is given by the Fisher equation:
 * $$r = \frac{1+i}{1+p}-1\,\!$$

where p is the inflation rate. For low rates and short periods, the linear approximation applies:
 * $$r \approx i-p\,\!$$

The Fisher equation applies both ex ante and ex post. Ex ante, the rates are projected rates, whereas ex post, the rates are historical.

Market rates
There is a market for investments, including the money market, bond market, stock market, and currency market as well as retail banking.

Interest rates reflect:
 * The risk-free cost of capital
 * Expected inflation
 * Risk premium
 * Transaction costs

Inflationary expectations
According to the theory of rational expectations, borrowers and lenders form an expectation of inflation in the future. The acceptable nominal interest rate at which they are willing and able to borrow or lend includes the real interest rate they require to receive, or are willing and able to pay, plus the rate of inflation they expect.

Risk
The level of risk in investments is taken into consideration. Riskier investments such as shares and junk bonds are normally expected to deliver higher returns than safer ones like government bonds.

The additional return above the risk-free nominal interest rate which is expected from a risky investment is the risk premium. The risk premium an investor requires on an investment depends on the risk preferences of the investor. Evidence suggests that most lenders are risk-averse.

A maturity risk premium applied to a longer-term investment reflects a higher perceived risk of default.

There are four kinds of risk:
 * repricing risk
 * basis risk
 * yield curve risk
 * optionality

Liquidity preference
Most investors prefer their money to be in cash rather than in less fungible investments. Cash is on hand to be spent immediately if the need arises, but some investments require time or effort to transfer into spendable form. The preference for cash is known as liquidity preference. A 1-year loan, for instance, is very liquid compared to a 10-year loan. A 10-year US Treasury bond, however, is still relatively liquid because it can easily be sold on the market.

A market model
A basic interest rate pricing model for an asset is

 * $$i_n = i_r + p_e + r_p + l_p\,\!$$

where

 * in is the nominal interest rate on a given investment
 * ir is the risk-free return to capital
 * i*n is the nominal interest rate on a short-term risk-free liquid bond (such as U.S. Treasury bills).
 * rp is a risk premium reflecting the length of the investment and the likelihood the borrower will default
 * lp is a liquidity premium (reflecting the perceived difficulty of converting the asset into money and thus into goods).
 * pe is the expected inflation rate.

Assuming perfect information, pe is the same for all participants in the market, and the interest rate model simplifies to

 * $$i_n = i^*_n + r_p + l_p\,\!$$

Spread
The spread of interest rates is the lending rate minus the deposit rate. This spread covers operating costs for banks providing loans and deposits. A negative spread is where a deposit rate is higher than the lending rate.

Output, unemployment and inflation
Interest rates affect economic activity broadly, which is the reason why they are normally the main instrument of the monetary policies conducted by central banks. Changes in interest rates will affect firms' investment behaviour, either raising or lowering the opportunity cost of investing. Interest rate changes also affect asset prices like stock prices and house prices, which again influence households' consumption decisions through a wealth effect. Additionally, international interest rate differentials affect exchange rates and consequently exports and imports. These various channels are collectively known as the monetary transmission mechanism. Consumption, investment and net exports are all important components of aggregate demand. Consequently, by influencing the general interest rate level, monetary policy can affect overall demand for goods and services in the economy and hence output and employment. Changes in employment will over time affect wage setting, which again affects pricing and consequently ultimately inflation. The relation between employment (or unemployment) and inflation is known as the Phillips curve.

For economies maintaining a fixed exchange rate system, determining the interest rate is also an important instrument of monetary policy as international capital flows are in part determined by interest rate differentials between countries.

Interest rate setting in the United States
The Federal Reserve (often referred to as 'the Fed') implements monetary policy largely by targeting the federal funds rate (FFR). This is the rate that banks charge each other for overnight loans of federal funds, which are the reserves held by banks at the Fed. Until the global financial crisis in 2008, the Fed relied on open market operations, i.e. selling and buying securities in the open market to adjust the supply of reserve balances so as to keep the FFR close to the Fed's target. However, since 2008 the actual conduct of monetary policy implementation has changed considerably, the Fed using instead various administered interest rates (i.e., interest rates that are set directly by the Fed rather than being determined by the market forces of supply and demand) as the primary tools to steer short-term market interest rates towards the Fed's policy target.

Impact on savings and pensions
Financial economists such as World Pensions Council (WPC) researchers have argued that durably low interest rates in most G20 countries will have an adverse impact on the funding positions of pension funds as "without returns that outstrip inflation, pension investors face the real value of their savings declining rather than ratcheting up over the next few years". Current interest rates in savings accounts often fail to keep up with the pace of inflation.

From 1982 until 2012, most Western economies experienced a period of low inflation combined with relatively high returns on investments across all asset classes including government bonds. This brought a certain sense of complacency amongst some pension actuarial consultants and regulators, making it seem reasonable to use optimistic economic assumptions to calculate the present value of future pension liabilities.

Mathematical note
Because interest and inflation are generally given as percentage increases, the formulae above are (linear) approximations.

For instance,

 * $$i_n = i_r + p_e\,\!$$

is only approximate. In reality, the relationship is

 * $$(1 + i_n) = (1 + i_r)(1 + p_e)\,\!$$

so

 * $$i_r = \frac {1 + i_n} {1 + p_e} - 1\,\!$$

The two approximations, eliminating higher order terms, are:
 * $$\begin{align}

(1+x)(1+y) &= 1+x+y+xy &&\approx 1+x+y\\ \frac{1}{1+x} &= 1-x+x^2-x^3+\cdots &&\approx 1-x \end{align}$$

The formulae in this article are exact if logarithmic units are used for relative changes, or equivalently if logarithms of indices are used in place of rates, and hold even for large relative changes.

Zero rate policy
A so-called "zero interest-rate policy" (ZIRP) is a very low—near-zero—central bank target interest rate. At this zero lower bound the central bank faces difficulties with conventional monetary policy, because it is generally believed that market interest rates cannot realistically be pushed down into negative territory. After the crisis of 2008, the Federal Reserve kept interest rates at zero for 12 years.

Negative nominal or real rates
Nominal interest rates are normally positive, but not always. In contrast, real interest rates can be negative, when nominal interest rates are below inflation. When this is done via government policy (for example, via reserve requirements), this is deemed financial repression, and was practiced by countries such as the United States and United Kingdom following World War II (from 1945) until the late 1970s or early 1980s (during and following the Post–World War II economic expansion). In the late 1970s, United States Treasury securities with negative real interest rates were deemed certificates of confiscation.

On central bank reserves
A so-called "negative interest rate policy" (NIRP) is a negative (below zero) central bank target interest rate.

Theory
Given the alternative of holding cash, and thus earning 0%, rather than lending it out, profit-seeking lenders will not lend below 0%, as that will guarantee a loss, and a bank offering a negative deposit rate will find few takers, as savers will instead hold cash.

Negative interest rates have been proposed in the past, notably in the late 19th century by Silvio Gesell. A negative interest rate can be described (as by Gesell) as a "tax on holding money"; he proposed it as the Freigeld (free money) component of his Freiwirtschaft (free economy) system. To prevent people from holding cash (and thus earning 0%), Gesell suggested issuing money for a limited duration, after which it must be exchanged for new bills; attempts to hold money thus result in it expiring and becoming worthless. Along similar lines, John Maynard Keynes approvingly cited the idea of a carrying tax on money, (1936, The General Theory of Employment, Interest and Money) but dismissed it due to administrative difficulties. More recently, a carry tax on currency was proposed by a Federal Reserve employee (Marvin Goodfriend) in 1999, to be implemented via magnetic strips on bills, deducting the carry tax upon deposit, the tax being based on how long the bill had been held.

It has been proposed that a negative interest rate can in principle be levied on existing paper currency via a serial number lottery, such as randomly choosing a number 0 through 9 and declaring that notes whose serial number end in that digit are worthless, yielding an average 10% loss of paper cash holdings to hoarders; a drawn two-digit number could match the last two digits on the note for a 1% loss. This was proposed by an anonymous student of Greg Mankiw, though more as a thought experiment than a genuine proposal.

Practice
Both the European Central Bank starting in 2014 and the Bank of Japan starting in early 2016 pursued the policy on top of their earlier and continuing quantitative easing policies. The latter's policy was said at its inception to be trying to "change Japan's 'deflationary mindset.'" In 2016 Sweden, Denmark and Switzerland—not directly participants in the Euro currency zone—also had NIRPs in place.

Countries such as Sweden and Denmark have set negative interest on reserves—that is to say, they have charged interest on reserves.

In July 2009, Sweden's central bank, the Riksbank, set its policy repo rate, the interest rate on its one-week deposit facility, at 0.25%, at the same time as setting its overnight deposit rate at −0.25%. The existence of the negative overnight deposit rate was a technical consequence of the fact that overnight deposit rates are generally set at 0.5% below or 0.75% below the policy rate. The Riksbank studied the impact of these changes and stated in a commentary report that they led to no disruptions in Swedish financial markets.

On government bond yields
Ireland bond prices.webp in 2011, And rates went negative after the European debt crisis

]] During the European debt crisis, government bonds of some countries (Switzerland, Denmark, Germany, Finland, the Netherlands and Austria) have been sold at negative yields. Suggested explanations include desire for safety and protection against the eurozone breaking up (in which case some eurozone countries might redenominate their debt into a stronger currency).

On corporate bond yields
For practical purposes, investors and academics typically view the yields on government or quasi-government bonds guaranteed by a small number of the most creditworthy governments (United Kingdom, United States, Switzerland, EU, Japan) to effectively have negligible default risk. As financial theory would predict, investors and academics typically do not view non-government guaranteed corporate bonds in the same way. Most credit analysts value them at a spread to similar government bonds with similar duration, geographic exposure, and currency exposure. Through 2018 there have only been a few of these corporate bonds that have traded at negative nominal interest rates. The most notable example of this was Nestle, some of whose AAA-rated bonds traded at negative nominal interest rate in 2015. However, some academics and investors believe this may have been influenced by volatility in the currency market during this period.

title: Interest rate


text:
Talk:Steeleye Span

Individually and Collectively
Individually and Collectively should have its own page and be linked to from this one, and included in the discography. Not all tracks on it are SS, but some are, and it's presented as a SS album. — Preceding unsigned comment added by 82.14.34.119 (talk) 17:33, 9 November 2015 (UTC)

External links modified
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English Folk musical groups
This could be added to the category called "English folk musical groups". Vorbee (talk) 16:49, 12 April 2018 (UTC)

Critical reception?
A modest proposal: A section on critical reception of the albums might be appropriate. Parcel of Rogues, for instance, was named one of the best albums of the year by Stereo Review (and others, I suppose) and is included in 1,000 Recordings to Hear before You Die. Unfortunately, I don't have access to the necessary source materials. Wgrommel (talk) 13:57, 20 March 2019 (UTC)

British Folk Band
What makes this group a British Folk Band? An English Folk Band would appear to be more a correct description and I propose to change it. — Preceding unsigned comment added by 78.70.161.206 (talk) 10:51, 12 August 2022 (UTC)

title: Talk:Steeleye Span