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French physicist Jean-Pierre Christin published the design of a mercury thermometer using the centigrade scale, with 0 representing the melting point of water and 100 its boiling point.
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Jean-Pierre Christin
French scientist (1683–1755)
Jean-Pierre Christin was a French physicist, mathematician, astronomer, and musician. His proposal in 1743 to reverse the Celsius thermometer scale was widely accepted and is still in use today.Source: Wikipedia (CC BY-SA)
Mercury-in-glass thermometer
Type of thermometer
The mercury-in-glass or mercury thermometer is a thermometer that uses the thermal expansion and contraction of liquid mercury to indicate the temperature.Source: Wikipedia (CC BY-SA)
Celsius
Unit of measurement for temperature
The degree Celsius is the unit of temperature on the Celsius temperature scale, one of two temperature scales used in the International System of Units (SI), the other being the closely related Kelvin scale. The degree Celsius can refer to a specific point on the Celsius…Source: Wikipedia (CC BY-SA)
Melting point
Temperature at which a solid turns liquid
The melting point of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at a standard pressure such as…Source: Wikipedia (CC BY-SA)
Boiling point
Characteristic temperature for a substance
The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.Source: Wikipedia (CC BY-SA)