actinometry

Noun

 * 1) the measurement of the heating power of electromagnetic radiation, especially that of solar radiation
 * 2) the measurement of the chemical or actinic energy of light
 * 1) the measurement of the chemical or actinic energy of light

Translations

 * French:
 * Irish: achtanaiméadracht
 * Polish: aktynometria
 * Portuguese: actinometria