Alpher, Ralph Asher (1921–2007)
An American physicist best known for his theoretical work on the origin
and early evolution of the Universe. In 1948, together with Hans Bethe
and George Gamow, he suggested how the abundances
of chemical elements could be explained as a result of thermonuclear processes
immediately after the Big Bang. This work
became known as the "alpha, beta, gamma" theory. As further developed in
collaborations with Robert Herman (1914-) and others, this concept of cosmic
nucleosynthesis became an integral
part of the standard Big Bang model. It also led to a prediction of the
cosmic microwave background.
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