Components of an aircraft

From this principle he shows that the sine of the angle of incidence and the sine of the angle of refraction are directly proportional to the rarities of the media…” Further, Bernoulli explained that, based upon Fermat’s derivation of Snell’s refraction results from the hypothesis of least action, “the most acute Leibniz in {Act. Erud.,} 1682, p. 1853 et. Seq., and soon thereafter ... ................
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