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    The first sunglasses were worn by Chinese judges in the form of smoke coloured quartz lenses, used to hide their eye expressions in court.

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Measurement Devices > Temperature


On 11th June, 1644, Torricelli first described his innovative work with barometers... Read more »

On 9th February, 1870, The Weather Bureau of the U.S. (now the NWS) was formed... Read more »


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