Den "dobbelte sirene" af Hermann Ludwig Ferdinand von Helmholtz (1821-1894), en tysk fysiker og fysiolog, som grundigt studerede høremekanismerne.(The “double siren” by Hermann Ludwig Ferdinand von Helmholtz (1821-1894), a German physicist and physiologist, who studied extensively the mechanisms of hearing.)Unknown artist |
€ 159.44
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Udateret · Billed-ID: 949979
Private Collection / Bridgeman Images |
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