The development of scale do you know?

Scale & ndash; — The temperature & the other; Scale & throughout; Basis, scale is a sign of measuring temperature of certain standards. As a measure of the length of the object with a length scale & ndash; — “ Long standard & throughout; , is a kind of artificial regulation, or a system of units. Before the 18th century, the scale is not unified and not very practical. The first kind of scale & ndash; — The Fahrenheit scale. Living in the Netherlands, German glassblower warren hite after 1709 - 1714 years of research, the ice, water, a mixture of ammonium oxidation equilibrium temperature is 0 & deg; F, the human body temperature at 96 & deg; F, which is divided into 96 grid, each cell is 1 & deg; F。 In 1724, he put the boiling point of water at 2120 & deg; F。 But unfortunately, he failed to the melting point of ice at 0 & deg; F, but as the 32 & deg; F。 This is the Fahrenheit scale, the symbol for tF. Used to use for a long time and is still used in Hong Kong and many parts of the world. The second scale & ndash; — Reaumur scale. In 1730, the main research in physics and zoology of French naturalist Leo muir produced a type of alcohol thermometer, he put the freezing point of water zero or and boiling point 80 or engraved on the thermometer for two fixed point, and then put it into 80, every 1 or. This is followed by popular for many years, the symbol for the tR. The third kind of scale & ndash; — The Celsius scale. In 1742, the Swedish physicist and astronomer, taken Theseus mercury thermometer is made of the boiling point of water and the melting point of ice at 0 ℃ and 100 ℃ respectively, which is divided into 100 grid, each cell is 1 ℃, that is, the symbol for t or tc. In 1743, collison pointed out that the fixed point is not in conformity with the habit of the hotter object the higher the temperature, eight years later, in 1750, was taken, Theseus accept colleague's suggestion, the above two points temperature switch, it is now the Celsius scale namely centigrade scale. The fourth scale & ndash; — The kelvin scale. In 1848, the British physicist Thomson kelvin namely thermodynamic temperature scale is put forward. The symbol for TK or T, and points out that only need to choose a fixed point in l854 values, this scale can be determined. This point is & other; Absolute zero & throughout; 。 When establishing thermodynamic temperature unit in practice, however, considering the historical tradition and technical conditions at that time, he had taken, Theseus 0 The interval of 100 ℃ as 100 new temperature interval, namely the new temperature of each interval is 1 degrees kelvin ( 1oK） With 1 c ( 1 ℃） Quite. In the history of similar and different meanings and the name of the ideal gas thermodynamic kelvin temperature scale, etc. The 5th kind of scale & ndash; — Rankine scale, in the 19th century by British engineers Rankine invention, its symbol for Tp, Rankine degree symbol for Ro. The scale of three-phase point of water about 491. 7 ro, the boiling point of water is about 671. 6Ro。 As the temperature of 0 degrees Celsius, the establishment of international scale and technology mature, and the need of actual measurement, the improvement, people invented all kinds of thermometer.