Microscopes diffraction apparatus accessories

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on a large scale did not begin until . rittenhouse resigned from the mint on june , , due to poor health. in congress approved a commemorative medal in his honor. additional contributions[ edit ] in rittenhouse became the first american to sight uranus . [ ] in rittenhouse made perhaps the first diffraction

grating using hairs between two finely threaded screws, with an approximate spacing of about lines per inch. [ ] [ ] this was roughly the same technique that joseph von fraunhofer used in for his wire diffraction grating. notable events[ edit ] grave of david rittenhouse at laurel hill cemetery in philadelphia...

https://en.wikipedia.org/wiki/David_Rittenhouse

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