Wireless telegraphy: Heaviside layer, a layer of the earth's atmospere containing electrons, has a more or less free state. Anonymous illustration from 1925. Private collection.(Wireless telegraphy: Heaviside layer, a layer of the earth's atmosphere containing electrons, has a more or less free state. Anonymous illustration from 1925. Private collection.)Anonymous Anonymous |
€ 99.08
Enthält 0% MwSt.
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Udatert · Engraving
· Bilde ID: 925467
Private Collection / Bridgeman Images |
0 Vurderinger |