DYNACTINOMETER
Source: 567
Dy‐nac′ti‐nom″e‐ter (?), n. [[Gr. � power + E. actinometer.]] An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.
Source: 567
Dy‐nac′ti‐nom″e‐ter (?), n. [[Gr. � power + E. actinometer.]] An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.