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Huygens, Christiaan, 1629-1695.
Treatise on light. In which are explained the causes of that which occurs in reflexion, & in refraction. And particularly in the strange refraction of Iceland crystal. By Christiaan Huygens. Rendered into English by Silvanus P. Thompson.
Light, Wave theory of -- Early works to 1800.
Refraction, Double -- Early works to 1800.
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916,
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