light mill

1. See radiometer

Example Sentences

But, as two friends helped Light mill the wood on Oct.

From Washington Times

Prof. Crookes has at length announced a theory in explanation of the movements exhibited by the remarkable "light mill" of his invention.

From Project Gutenberg

All these and other facts previously obtained prove that the action of light is not direct, but indirect; and Dr. Crookes has, after repeatedly refusing to consider hasty judgments, in consequence come to the conclusion stated above, that the rotation of the light mill is the result of heat.

From Project Gutenberg