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Acoustics experiment by Lippmann. Franco-Luxembourgish physicist Gabriel Lippmann (1845-1921) carrying out an acoustics demonstration at the physics department of the faculty of sciences at the Sorbonne, Paris, France. He is demonstrating how sound can be transmitted through solid bodies, with the bar passing through the window transmitting sound to the violin from the other side of the window. This illustration is from 'Physique Populaire' (Emile Desbeaux, 1891).
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