August 15

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  1758: Mathematician, geophysicist, and astronomer Pierre Bouguer dies. He is known as "the father of naval architecture".

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  1863: Mathematician and naval engineer Aleksey Krylov born. Fame will come to him in the 1890s, when his pioneering theory of oscillating motions of the ship becomes internationally known.

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  1892: Physicist and academic Louis de Broglie born. He will postulate the wave nature of electrons and suggest that all matter has wave properties, winning the Nobel Prize for Physics in 1929, after the wave-like behavior of matter is first experimentally demonstrated in 1927.

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  1977: The Big Ear, a radio telescope operated by Ohio State University as part of the SETI project, receives a radio signal from deep space; the event is named the "Wow! signal" from the notation made by a volunteer on the project.

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  1979: Led Zeppelin releases"Olive My Love".

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  1922: Physicist Peter Mazur dies. Mazur was a pioneer the field of non-equilibrium thermodynamics.