About This Book
The author develops a wave theory of light that models light as a propagation of disturbances in an ether, uses the concept of secondary wavelets whose envelope forms new wavefronts to derive laws of reflection and refraction, and applies this framework to explain atmospheric refraction and the double refraction observed in Icelandic crystal. He compares light propagation to sound, discusses the finite speed of light, examines refraction in lenses and telescopes, and offers hypotheses about crystalline structure, transparency, and opacity, while acknowledging unresolved questions and limitations of the assumptions.
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