Science

Edison’s final patent

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On this day in 1931, Thomas Edison submitted his last patent, a patent for a device with which you can hold an article to be electroplated. The first great invention developed by Edison in Menlo Park was the tin foil…
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Japan issues 4th edition constellation set

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On the 4th of December 2013 Japan Post launched the fourth issue of Constellation series, which aims to promote both fields of letter culture and natural science. The stamps depict ten signs of constellation often seen in winter: Aries, Taurus,…
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