Between these two temperatures a scale is made. Present temperature scales have two basic points: from when the water starts to freeze and when it starts to boil. Mercury also stays in the liquid phase for a great range of temperature. The reason that mercury was used is that the thermal expansion of mercury is large, mostly homogeneous and it does not stick on the glass. In 1724 Gabriel Fahrenheit introduced the medium mercury in the thermo scopes. In 1610 Galileo introduced wine in the thermo scopes instead of air. The earlier measurement instruments for temperature where called thermo scopes. He had a scale of 4 degrees warmth and 4 degrees of cold.

One of the first who wanted to make a temperature scale was Galen (ca. The idea of measuring temperature exists a long time. This means that liquid, solid and gas phase from a matter appear at the same time. The triple point is a theoretical point where the three phases of a matter (for example water) come together. One degree Celsius equals the change of temperature with one degree on the ideal gas-scale.The triple point of water is defined as 0.01 oC.The Celsius-scale is defined by the follow two points: The triple point of water is 273.16 K, which is 0.01 oC (degrees Celsius). In the 13th CGPM in 1967 was decided that the unit of temperature will be the Kelvin, and not 'degrees Kelvin'. The Kelvin, unit of thermodynamic temperature, is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water (13de CGPM (1967), RГ©s. The tendency of a substance or an object to transfer heat to its surroundings.Дefinition of the thermodynamic temperature: With this program, the units of temperature (degrees Celsius, Kelvin and degrees Fahrenheit) can be converted.Д¬alculate the wind chill Definition of temperature: Separation and Concentration Purification Request.Plant Inspection & Process Optimalisation.

Temperature conversion formulas