American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 277
through a plate oftourmaline with its axis at right angles to theplane of reflection. Subsequent observationsconfirmed the opinion advanced by Fresnel,that this is incapable of reflection at certainangles and in certain positions of the incidentplane. This can be proved by using anotherplate of… … ond plate (analyzer), all the appearanceswill be obserred that were seen with the tour-maline, for the image of the first plate of glasswill be reflected, but will be alternately illu-minated and obscured on rotation of the sec-ond. The relative positions of both the tour-maline and glass…
Clocks and watches
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