actinometer
noun
- Physics an instrument for measuring the intensity of the sun's rays, or the actinic effect of light rays
- Photog. exposure meter
See actinometer in American Heritage Dictionary 4
(ăkˌtə-nŏmˈĭ-tər)
noun Any of several radiometric instruments, such as a pyrheliometer, used chiefly for meteorological measurements of terrestrial and solar radiation.
Related Forms:
- acˌti·no·metˈric (-nō-mĕtˈrĭk), acˌti·no·metˈri·cal adjective
Learn more about actinometer
link/cite
print
suggestion box