Wax thermostatic element
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The wax thermostatic element was invented in 1934 by Sergius Vernet. Its principal application is in automotive thermostats used in the engine cooling system. The first applications in the plumbing an
Car engine wax thermostatic element
Double-valve engine thermostat
Celsius
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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, the other being the closely related Kelvin scal
A thermometer calibrated in degrees Celsius, showing a temperature of 0 °C in a glass of ice and water
Measurement of an ice-water mixture in equilibrium at 370 m above sea level. Thermometer shows 0.05 °C. The slight deviation from 0 °C is due to instrument uncertainty and trace water impurities.
Boiling point of water measured at an altitude of ~370 m a.s.l. The 99.7 °C result reflects lower atmospheric pressure (~970 hPa), combined with minor instrument uncertainty and trace water impurities.