Lectures on light, delivered in the United States in 1872-'73; with an appendix (1873)
Tyndall, John, 1820-1893 · New York, Appleton · leaf 150
d now for polarization and its attendant phe-nomena. Crossing our two Nicol prisms, B, C, Fig. 24and placing our pile D behind the analyzer, neitherheat nor light reaches it; the needle remains unde-flected. Introducing the iodine, the slightest turningof either prism causes the heat to pass, and… … to zero. Plunging into the dark space between theprisms our plate of mica, the needle instantly startsoflF, showing that the mica acts upon the heat as itdid upon the light: we have in both cases the sameresolution and recompounding of vibrations. Removingthe mica, the needle falls to zero; but, on…
Optics
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