Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of actinometer is as below...

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

Tithonometer :: Tithonometer (n.) An instrument or apparatus for measuring or detecting tithonicity; an actinometer.

Actinometer :: Actinometer (n.) An instrument for measuring the direct heating power of the sun's rays.

Actinometer :: Actinometer (n.) An instrument for measuring the actinic effect of rays of light.

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