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dynactinometer

dynactinometer is defined in Webster's Unabridged Dictionary (1913) with 1 sense. The full text of each entry is reproduced verbatim below.

Definitions

1.An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Related questions

What does "dynactinometer" mean?

Reverse-dictionary questions

Definition-first questions whose answer is dynactinometer.

What is an instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses called?

Sources

Definitions: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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