inventor - Imágenes y Fotografía de stock

Ctesibius Ktesibius of Alexandria 285-222 BC, Greek mathematician and inventor who studied pneumatics Woodcut On the left Ctesibius sits in his room...
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Electrophysiological experiments by Jacques-Arsène d'Arsonval (1851-1940) French physician and physicist. Lamp lights up in the hands of an operator placed in a...
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Fortunate architects celebrating a success in a company
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Archimedes c 287-212 BC Greek mathematician and inventor, in his bath Discovered formulae for calculating areas and volumes of plane and solid figures...
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Cheerful architects studying blueprints
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Frederick Settle Barff 1823-1887 English chemist born at Hackney, Greater London Inventor of the Barff Bower-Barff process for preventing the corrosion of iron...
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Joseph-Marie Jacquard 1752-1834 French inventor, 1880 Jacquard, inventor of the punched card loom 1801-1808, was attacked by the silk weavers of Lyon
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Painted house wall, Otto-Lilienthal-Museum, Stölln, Brandenburg, Germany
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Aerial Telegraph Semaphore Artist's impression of Claude Chappe's 1763-1895, French engineer and inventor, telegraph system in use Widely used
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Elisha Gray, American inventor, presenting the caveat for his telephone, 1876, (c1890). Gray (1835-1901) arrived at the US Patent Office at 4pm on 14 February...
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