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This is the photo of Étienne-Jules Marey 's chronophotographic gun , now at the Musée des Arts et Métiers ( Paris ). With this instrument the French scientist was capable of taking 12 consecutive frames a second, all on the same picture, which gave him the possibility to study animals' behavior. Marey started his photographic experiments from Villa Maria , in Naples , where he was named "the mad man of Posillipo", as Neapolitan people always saw him gazing at birds with satisfaction, without shooting them.

The History of Medicine Topographical Database

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