actinometer

Example Sentences

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A selenium actinometer has been described in the Comptes Rendus in a communication from M. Morize, of Rio de Janeiro.

From Scientific American Supplement, No. 484, April 11, 1885 by Various

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

With daylight, however, the light is constantly fluctuating, and this renders the use of an actinometer a necessity for correct exposure.

From Wireless Transmission of Photographs Second Edition, Revised and Enlarged 1919 by Martin, Marcus J.

A very suitable instrument for timing the exposure of carbon tissue is Sawyer's actinometer.

From Photogravure by Blaney, Henry R.