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THE MATHEMATICAL THEORY OF HUYGEN'S PRINCIPLE. B.B. Baker, E.T. Copson.
Publisher: Oxford University Press: 1950 2nd ed.

Lenses and Waves: Christiaan Huygens and the Mathematical Science of Optics in the Seventeenth Century, Fokko Jan Dijksterhuis. Figure 3: Geometry of the diffraction problem, as described by (3). Language: English Released: 1950. Luckily, diffraction is really very straightforward once one grasps said Huygens-Fresnel principle; the rest is just mathematical sleights of hand as we'll see. Finally, $\kappa$ is a “reality factor” to unite theory and observation, which we need to discuss a bit more in detail. My thesis is that the “wave” theory of light is a circular argument, based on Huygens untested assumption that waves impinge on a slit (or edge). A word of warning: While most of the following is extracted from books and other public sources, I make . I expect disagreement, but that's why we're here. Publisher: Oxford University Press: 1950 2nd ed. GO THE MATHEMATICAL THEORY OF HUYGEN'S PRINCIPLE. Descartes prescribed what the telescope should be according to mathematical theory. The easiest way for me is If you look at this you find that it's a vector in the direction of motion, and, per the uncertainty principle, describes the degree of uncertainty in terms of the relationship between displacement and momentum.