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Alethoscope An alethoscope (Greek true+view) is an instrument for viewing pictures with a lens to enlarge and show them with natural relations and proportions.〔http://www.thefreedictionary.com/Alethoscope〕 The alethoscope was invented by Carlo Ponti in 1860 and patented in 1861.〔Hannavy, John (2007). Encyclopedia of Nineteenth-Century Photography. New York: Routledge〕 It was used to view photographs that were colored, perforated and mounted on a curved frame. The alethoscope showed day-and-night effects whether viewing it against the light or reflect the light by two side mirrors. It is the larger version of a megalethoscope.〔name=athl>Magic visions before the advent of the cinema by Carlo Alberto Zotti Minici ISBN 9788871152998 ()〕 ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Alethoscope」の詳細全文を読む
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