File:Sentry-box experiment.jpg
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Summary
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English: Crop of file
Benjamin Franklin’s sentry-box experiment. Drawing reproduced from the “Bowdoin MS”, which consists of a manuscript copy of all of Franklin’s earliest papers on electricity, copied by two amanuenses and corrected by Franklin, and sent by Franklin to Bowdoin in 1750. Cf. I. Bernard Cohen, The Two Hundredth Anniversary of Benjamin Franklin's Two Lightning Experiments and the Introduction of the Lightning Rod, in: Proceedings of the American Philosophical Society, Vol. 96, No. 3. (Jun. 20, 1952), pp. 331–366. |
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Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:33, 18 July 2015 | | 152 × 256 (7 KB) | Doug Coldwell | User created page with UploadWizard |
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