Letter to Einstein by bose – Bose-einstein condensate (BEC)

The greatness of two scientists. “once Satyendra Nath Bose sent his research paper to Einstein, then new theory arose, as follows.”

A  Bose-einstein condensate (BEC) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero. Under such conditions, a large fraction of the bosons occupies the lowest quantum state, at which point quantum effects become apparent on a macroscopic scale. These effects are called

“macroscopic quantum phenomena”.

Bose first sent a paper to Einstein on the quantum statistics of light quanta (now called photons). Einstein was impressed, translated the paper himself from English to German and submitted it for Bose to the Zeitschrift für Physik, which published it. (The Einstein manuscript, once believed to be lost, was found in a library at Leiden University in 2005.Although later experiments have revealed complex interactions, this state of matter was first predicted, generally, in papers by Satyendra Nath Bose and Albert Einstein in 1924–25.

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