population inversion
A green apple originating in Australia.
present participle of underdetect
Not marked with a dash. / Not destroyed; not ruined.
(physics) The creation of a system in which more atoms or molecules are in an excited state than in a ground state.
レーザー発振を達成するため、物理学者は利得媒質内に原子や分子が基底状態よりも励起状態に多く存在するような人口反転を慎重に作り出した。
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