HERSCHEL, J.F.W. (JOHN FREDERICK WILLIAM).

On the action of crystallized bodies on homogenous light, and on the causes of the derivation from newton's scale in the tints which many of them develope on exposure to a polarized ray. Read december 23, 1819.

London, W. Bulmer and Co., 1820. 4to. No wrappers as extracted from "Philosophical Transactions" 1820 - Part I. Pp. 45-100 a. 1 engraved plate.

First printing of one of herschel's importent investigations on polarization and the wave theory of light. He designed a new instrument to project the colored rings onto a screen about three inches behind the analyzer. This method allowed Herschel to examine the details of the tints.

Order-nr.: 49743