Dynactinometer definitions

Dynactinometer

• (n.) An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.
Found on http://thinkexist.com/dictionary/meaning/dynactinometer/

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Dynactinometer

Dy·nac`ti·nom'e·ter noun [ Greek ... power + English actinometer .] An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.
Found on http://www.encyclo.co.uk/webster/D/134

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