RECOMBINATION

Recombination

In cosmology, recombination refers to the epoch at which charged electrons and protons first became bound to form electrically neutral hydrogen atoms. After the Big Bang, the universe was a hot, dense plasma of photons, electrons, and protons. This plasma was effectively opaque to electromagnetic radiation, as the distance each photon could travel before encountering a charged particle was very short. As the universe expanded, it also cooled. Eventually, the universe cooled to the point that the formation of neutral hydrogen was energetically favored, and the fraction of free electrons and protons as compared to neutral hydrogen decreased to about 1 part in 10,000.

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recombination

Noun

  1. Combination a second or subsequent time.
  2. The formation of genetic combinations in offspring that are not present in the parents
  3. The reverse of dissociation


The above text is a snippet from Wiktionary: recombination
and as such is available under the Creative Commons Attribution/Share-Alike License.

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