光的传播:半透明体允许光的出现,但不能区分物体的形状。1925年的匿名插图。私人收藏。(Light propagation: translucent bodies allow light to emerge, but do not distinguish the shape of objects. Anonymous illustration from 1925. Private collection.)匿名匿名 |
€ 96.73
Enthält 0% MwSt.
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日期不详 · Engraving
· 图片ID: 916056
Private Collection / Bridgeman Images |
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