actinometer

Example Sentences

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Another object was, to bring down specimens of air from different altitudes, for analysis; to try the effect of the actinometer at great elevations; and to note the hygrometric condition.

From Chambers's Edinburgh Journal, No. 456 Volume 18, New Series, September 25, 1852 by Chambers, Robert

The actinometer of M. Violle is, in principle, a sphere of copper, blackened externally, and having inside a thermometric apparatus which registers some distance away.

From Sounding the Ocean of Air by Rotch, A. Lawrence

When you get home, the first thing to do is to get hold of a paint box and paint the underside of the glass of your actinometer to match the darkened paper.

From Scientific American Supplement, No. 492, June 6, 1885 by Various

Then note down everything you have done—kind of view, stop, speed of plate, exposure of each plate, and length of exposure of actinometer.

From Scientific American Supplement, No. 492, June 6, 1885 by Various

Herschell’s actinometer and Pouillet’s pyrheliometer, instruments for ascertaining the absolute heating effect of the sun’s rays, should, however, be more generally employed by meteorologists.

From A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility by Negretti, Henry