- отношение прошедшего потока лучистой энергии к падающему потоку.
English-Russian dictionary of terms for heating, ventilation, air conditioning and cooling air. 2013.
Radiant energy — Visible light (a form of radiant energy) scattered by fog in a forest. Radiant energy is the energy of electromagnetic waves.[1] The quantity of radiant energy may be calculated by integrating radiant flux (or power) with respect to time and … Wikipedia
Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) … Wikipedia
