Dual Nature of Light is the currently accepted description of the nature of Light by scientific community. However the Author proceeds to explain Interference and Diffraction with an alternative approach with the proposal of a fluid layer based on the experiments conducted afresh. Interference fringes and Diffraction patterns are explained in terms of absorption, refraction and scattering of photons in the density ripples existing in the fluid layer.

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Great ideas and gems of mathematics. April 7, 2010 by williamtross. This blog is a set of notes for a First Year Seminar. This course will be a selective historical view of what is mathematics and what do mathematicians really care about. We will consider questions such as. Why is the concept of proof so important to mathematics? Is mathematics invented or discovered? Who has the burden of proof in a mathematical argument, the author or the reader? .