Sound energy: Doppler effect highlighted in 1842 by Christian Andreas Doppler (1803-1853). The whistle of a locomotive has a sharp sound when it arrives and becomes severe when it moves away. Anonymous illustration from 1925. Private collection.(Sound Energy: Doppler Effect Highlighted in 1842 by Christian Andreas Doppler (1803-1853). The Whistle of a Locomotive Has a Sharp Sound When It Arrives and Becomes Severe When It Moves Away. Anonymous Illustration from 1925. Private Collection)匿名匿名 |
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日期不详 · Engraving
· 图片ID: 1047814
Private Collection / Bridgeman Images |
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