Temperature Scales - Temperature Scales, Temperature...

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Temperature Scales, Temperature Control/Uses (Lecture 6) Temperature Scales Fahrenheit Scale o Widely used only in the U.S. o Developed by Gabriel Daniel Fahrenheit in 1714 o Based on Mercury-in-glass thermometer based upon a “zero” point o Other points: 98.6 F human body temperature 212 F water’s boiling/steam point Celsius Scale o Used widely worldwide (except U.S.) o Developed by Anders Celsius in 1742 o Devised using a decimal scale and a “zero” point o Other points 37 C human body temperature 100 C water’s boiling/steam point o A degree of Celsius is larger than a degree of Fahrenheit by a factor of 1.8 Kelvin Scale o Used in scientific formulas/applications o Developed by Lord Kelvin (William Thompson) in 1848 o The Kelvin “zero” point is the cessation of molecular motion (there are no negative numbers on the Kelvin Scale) o Other points: 273 K freezing point of water 373 K water’s boiling/ steam point
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Temperature Scales - Temperature Scales, Temperature...

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