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CHLADNI, Ernst Florens Friedrich (1756-1827). Die Akustik. Leipzig: Breitkopf & Härtel, 1802.
First edition of the ‘foundation of the modern science of acoustics’ (PMM). A musician and scientist, Chladni devised a method for visualizing the patterns of vibrations. By applying sand to fixed metal plates and drawing a violin bow across the edge, he recorded the patterns in the sand. His work ‘prompted Napoleon to remark that "Chladni has made sound visible"' (Dibner). ‘Chladni plates’ and study of vibration continue today. His results were first reported in 'New Discoveries in the Theory of Sound,' 1787 and greatly expanded in the present work. From the library of Marcel Bekus (1888-1939). Born at Warsaw, Bekus was an anarchist, participant in the 1905 Russian revolution, and historian. He emigrated to Paris in 1919 and his collection was dispersed by his grandson in 1985. Norman 481; PMM 223(b); Bib. Mechanica p.70; Sparrow 38.
Quarto (236 x 198mm). Engraved portrait of the author by F.W. Bollinger on title, 11 engraved plates (lightly browned as usual, occasional spotting). Contemporary mottled paper boards, paper spine label (light wear at extremities); modern morocco-backed box. Provenance: Salomon, bookshop at Strasbourg (ticket) – Marcel Bekus (1888-1939; small oval stamp).
First edition of the ‘foundation of the modern science of acoustics’ (PMM). A musician and scientist, Chladni devised a method for visualizing the patterns of vibrations. By applying sand to fixed metal plates and drawing a violin bow across the edge, he recorded the patterns in the sand. His work ‘prompted Napoleon to remark that "Chladni has made sound visible"' (Dibner). ‘Chladni plates’ and study of vibration continue today. His results were first reported in 'New Discoveries in the Theory of Sound,' 1787 and greatly expanded in the present work. From the library of Marcel Bekus (1888-1939). Born at Warsaw, Bekus was an anarchist, participant in the 1905 Russian revolution, and historian. He emigrated to Paris in 1919 and his collection was dispersed by his grandson in 1985. Norman 481; PMM 223(b); Bib. Mechanica p.70; Sparrow 38.
Quarto (236 x 198mm). Engraved portrait of the author by F.W. Bollinger on title, 11 engraved plates (lightly browned as usual, occasional spotting). Contemporary mottled paper boards, paper spine label (light wear at extremities); modern morocco-backed box. Provenance: Salomon, bookshop at Strasbourg (ticket) – Marcel Bekus (1888-1939; small oval stamp).
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