You searched for: “actinometry
actinometry (s) (noun), actinometries (pl)
The assessment of the intensity of electromagnetic radiation: The actinometry shows the intensity of actinic rays and the degree of penetration of such rays.

Actinometry indicates the amount of light energy in photochemistry and the extent of solar energy.

This entry is located in the following unit: actino-, actin-, actini-, -actinal, actis- + (page 3)