Ernst Chladni, German Physicist

Bildnummer 12653038
Ernst Chladni, German Physicist
Ernst Florens Friedrich Chladni (1756-1827) was a German physicist and musician who is considered by many to be the Father of Acoustics. In 1782 Chladni began his research in physics. One of his most famous achievements was inventing a technique to show the various modes of vibration of a rigid surface. A plate or membrane vibrating at resonance is divided into regions vibrating in opposite directions. Chladni's technique consisted of drawing a bow over a piece of metal whose surface was lightly covered with sand. The plate was bowed until it reached resonance, when the vibration causes the sand to move and concentrate along the nodal lines where the surface is still, outlining the nodal lines. These patterns are now called Chladni figures.
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