Vibratory movements: formula of the frequency of the number of beats per second(Vibratory movements: formula of the frequency of the number of peats per second. Anonymous illustration from 1925. Private collection.)Anonymous Anonymous |
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Undated · Engraving
· Picture ID: 925373
colour · colours · engraving · physical · movement · knowledge · 20 20th 20th xx xxth 20th century · bianchetticor · energy · energy · Private Collection / Bridgeman Images |
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