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big Bang

The hypothetical but widely accepted ‘explosive’ event that marked the origin of the universe as we know it. At the time of the Big Bang, the entire universe was squeezed into an ...

Big Bang

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A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018

...Big Bang The hypothetical but widely accepted ‘explosive’ event that marked the origin of the universe as we know it. At the time of the Big Bang, the entire universe was squeezed into an infinitely small, hot, superdense state. The Big Bang explosion threw this compact material outwards, producing the expanding universe seen today ( see redshift ). The cause of the Big Bang is unknown; observations of the current rate of expansion of the universe suggest that it took place about 13–14 billion years ago. The Big Bang theory began modern cosmology . According...

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The Oxford Companion to Cosmology

Reference type:
Subject Reference
Current Version:
2008

... bang The big bang, also known as the initial singularity , refers to the instant of formation of the Universe . There is not actually a whole lot to say about it, as no one has the slightest idea what might have happened at the big bang, nor whether one actually happened at all. The term ‘big bang’ was coined by Fred Hoyle and intended to be disparaging. If, and it is a very big ‘if’, Einstein's theory of general relativity were to remain valid to arbitrarily high densities, then the idea of a big bang as the start to the Universe is pretty much...

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A Dictionary of Finance and Banking (6 ed.)

Reference type:
Subject Reference
Current Version:
2018

... Bang The upheaval on the London Stock Exchange ( LSE ) when major changes in operation were introduced on 27 October 1986 . The major changes enacted on that date were: (a) the abolition of LSE rules enforcing a rigid distinction between jobbers and brokers; (b) the abolition of fixed commission rates charged by stockbrokers to their clients. The measures were introduced by the LSE in return for an undertaking by the government (given in 1983 ) that they would not prosecute the LSE under the Restrictive Practices Act. Since 1986 the Big Bang has...

Big Bang

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A Dictionary of Business and Management (6 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Social sciences, Business and Management
Length:
106 words

... Bang The upheaval on the London Stock Exchange (LSE) when major changes in operation were introduced on 27 October 1986 . The major changes enacted on that date were: (a) the abolition of LSE rules enforcing a dual-capacity system; (b) the abolition of fixed commission rates charged by stockbrokers to their clients. The measures were introduced by the LSE in return for an undertaking by the government (given in 1983 ) that they would not prosecute the LSE under the Restrictive Trade Practices Act. Since 1986 the Big Bang has also been associated...

Big Bang

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World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
153 words

... Bang In cosmology , theory advanced to explain the origin of the Universe, developed from the ideas of Georges Lemaître and advanced in the 1940s by George Gamow . According to ‘Big Bang’ theory, a giant explosion 10 to 20 thousand million years ago began the expansion of the Universe, which still continues. Everything in the Universe once constituted an exceedingly hot and compressed gas with a temperature exceeding 10,000 million degrees. As it cooled, nuclear reactions took place that led to material emerging from the fireball consisting of about 75%...

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The Handbook of International Financial Terms

Reference type:
Subject Reference
Current Version:
2005

... Bang (UK) . Used to describe the series of deregulatory alterations to the rules and trading practices that took place, or took effect, on 27 October 1986 at the London Stock Exchange , and which brought them more into line with other major stock exchanges overseas. These changes centred upon the introduction of: negotiated brokerage commissions (cf. broker ), the introduction of dual capacity allowing members both to make markets and act as brokers ( cf. capacity ), and multi-functional and diversely owned members ( cf. liberalization ; ...

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A Dictionary of Economics (5 ed.)

Reference type:
Subject Reference
Current Version:
2017
Subject:
Social sciences, Economics
Length:
109 words

...big bang 1. A shorthand expression for the view that reforms should be carried out as rapidly as possible. This is contrasted with gradualism , the view that major changes should be made gradually. These views clash in countries undertaking liberalization or structural transformation . The argument for rapid change is that it creates a sufficiently large group who have gained from change to make it politically irreversible, whereas gradual change encourages opposition, because the losers often suffer before the gainers benefit. 2. The major change to trading...

Big Bang

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A Dictionary of Accounting (5 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Social sciences, Business and Management
Length:
111 words

... Bang The upheaval on the London Stock Exchange (LSE) when major changes in operation were introduced on 27 October 1986 . The major changes enacted on that date were: (a) the abolition of LSE rules enforcing a rigid distinction between jobbers and brokers; (b) the abolition of fixed commission rates charged by stockbrokers to their clients. The measures were introduced by the LSE in return for an undertaking by the government (given in 1983 ) that they would not prosecute the LSE under the Restrictive Practices Act. The term is sometimes used...

Big Bang

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Magic Universe: A Grand Tour of Modern Science

Reference type:
Subject Reference
Current Version:
2009
Subject:
Science and technology, History of Science
Length:
3,946 words

...hold the key to the Universe in our hands.’ All the same, there were possibly fatal flaws in the standard theory of the Big Bang, at that time. One was that it was conceptually difficult to pack enough energy into an extremely small speck to make more than a few atoms, never mind billions of galaxies. Another was that the cosmos is far too uniform for a naïve Big Bang theory to explain. The evidence that most favoured the idea of a Big Bang comprised the galaxies seen rushing away from us in all directions, and the radio waves that fill the sky as the cosmic...

hot Big Bang

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A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018

...Big Bang An alternative term for the standard Big Bang theory. The word ‘hot’ was initially used to distinguish it from a rival theory which had a cold initial phase. The existence of the cosmic microwave background requires that the Universe must have been hot in the past if the Big Bang picture is...

big bang theory

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... bang theory The current explanation for the origin of the universe, in which it expands and evolves from an initial very high-temperature condition about 13.7 billion years ago. The expansion time is given from the reciprocal of the Hubble constant (the rate at which galaxies are receding). All all-pervasive background radiation of 3 K is considered to be residual from the big bang and is the strongest supporting evidence for the theory. http://www.big-bang-theory.com/ An overview of the big bang...

Big Bang theory

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A Dictionary of Astronomy (3 ed.)

Reference type:
Subject Reference
Current Version:
2018

...microwave radiation. The discovery of the microwave background in 1965 resolved a long-standing battle between the Big Bang and its then rival, the steady-state theory , which cannot explain the black-body form of the microwave background. Ironically, the term Big Bang was initially intended to be derogatory and was coined by F. Hoyle , one of the strongest advocates of the steady state. Big Bang Chronology Era Time after Big Bang Temperature Planck era 0 to 10 −43  s ? to 10 34  K radiation era a 10 −43  s to 30 000 years 10 34 to 10 4  K matter era...

Big Bang Theory

Big Bang Theory  

A Dictionary of Creation Myths

... Bang Theory Myths are considered truth by the cultures from which they first emerge—at least until they are “exposed” as “mere myth.” The big bang theory, the currently accepted creation story of our scientific culture, reflects our cultural priorities; it is a record of our culture's understanding of its own place in the universe and its sense of what the universe is. It depicts a world created in a few minutes in one great explosion long, long ago. According to the theory, our solar system was organized by that explosion and has been expanding ever since....

big-bang theory

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A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
978 words
Illustration(s):
1

...universe is called the big-bang theory , first put forward by Georges Lemaître in 1927. The theory suggests that the universe originated as a minute but very hot body and that the temperature has been falling as the expansion has continued. In several papers in the 1940s Ralph Alpher and Robert Herman working with George Gamow predicted that there should be a microwave background corresponding to a black-body temperature a few degrees above absolute zero. This microwave background was discovered 20 years later. The big-bang theory also explains the...

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The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

... bang (no cap.) ...

Big Bang

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The Oxford Dictionary of Modern Slang (2 ed.)

Reference type:
Subject Reference
Current Version:
2010
Subject:
Language reference
Length:
47 words

... Bang noun The deregulation of the London Stock Exchange on 27 October 1986 , when a number of complex changes in trading practices were put into effect simultaneously. 1983 –. [From the earlier senses, creation of the universe in one cataclysmic explosion, hence any sudden forceful...

Big Bang

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Brewer's Dictionary of Modern Phrase & Fable (2 ed.)

Reference type:
Subject Reference
Current Version:
2011

... Bang . (1) In cosmology a theory explaining the origin of the universe. It postulates that a small, superdense mass exploded, hurling matter in all directions in a cataclysmic explosion. As the fragments slowed down, the stars and galaxies formed, although the universe is still expanding. (2) The major modernization of the Stock Exchange, in the City of London, which took place on 27 October 1986 , was also known as the Big Bang. The distinction between stockjobber and stockbroker was abolished, and operations became fully computerized. The aim was to...

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Pocket Oxford Italian Dictionary: Italian-English (4 ed.)

Reference type:
Bilingual Dictionary
Current Version:
2012
Subject:
Bilingual dictionaries
Length:
5 words
big bang

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Pocket Oxford Italian Dictionary: English-Italian (4 ed.)

Reference type:
Bilingual Dictionary
Current Version:
2012
Subject:
Bilingual dictionaries
Length:
8 words
Big Bang

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New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
140 words

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