Vibrationsrörelser: koncentriska sfärer har ett vibrationscentrum kallas vågytor. Anonym illustration från 1925. Privat samling.(Vibratory movements: concentric spheres have a vibration center are called wave surfaces. Anonymous illustration from 1925. Private collection.)Anonymous Anonymous |
| € 133.36
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1925 · Engraving
· TavelD: 929425
Private Collection / Bridgeman Images |
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