Definitions
from The Century Dictionary.
- noun An instrument for measuring and registering the variations of actinic or chemical influence in the solar rays.
from the GNU version of the Collaborative International Dictionary of English.
- noun An instrument for measuring and recording the variations in the
actinic or chemical force of rays of light.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
recording actinometer
Etymologies
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Examples
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whichbe commented on the word actinograph
Instrument used to calculate time of photographic exposure. (from Phrontistery)
May 22, 2008