电气现象:交变电流。人们可以通过提升和降低一个与水容器相连的漏斗来获得这些电流的图像。1925年的匿名插图。私人收藏。(Electrical phenomena: alternating currents. One can get an image of these currents by lifting and lowering a funnel connected to a water vessel. Anonymous illustration from 1925. Private collection.)匿名匿名 |
€ 98.15
Enthält 0% MwSt.
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日期不详 · Engraving
· 图片ID: 918286
Private Collection / Bridgeman Images |
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