File:Cavallo's multiplier labelled.jpg
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![File:Cavallo's multiplier labelled.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/07/Cavallo%27s_multiplier_labelled.jpg/800px-Cavallo%27s_multiplier_labelled.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:43, 2 November 2008 | ![]() | 1,137 × 802 (123 KB) | commons>BillC | {{Information |Description={{en|1=Cavallo's multiplier: a 1795 device to amplify a small electric charge so that it could be detected by the electroscopes of the day. The charge to be multiplied was applied to a metal plate A, which was supported on an i |
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