• It has been shown already how electromagnetic radiation can interact with the ground state to produce an excited state. In an equivalent manner a photon can interact with an excited state to produce a ground state.
РАВНЫМ ОБРАЗОМ
Русско-английский перевод РАВНЫМ ОБРАЗОМ
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012