Image:Koenig-manometric-flame-device.gif

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1862 Manometric flame apparatus of Karl Rudolf König. It was used to visualize sound waves. Source of illustration: Zimmermann, E. (1903). XVIII. Preis- Liste über psychologische und physiologische Apparate (p. 105). Leipzig, Germany: Eduard Zimmermann

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current01:48, 14 June 2005172×130 (3 KB)Rsabbatini (Talk | contribs) (1862 Manometric flame apparatus of Karl Rudolph König. It was used to visualize sound waves. Source of illustration: Zimmermann, E. (1903). ''XVIII. Preis- Liste über psychologische und physiologische Apparate'' (p. 105). Leipzig, Germany: Eduar)

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