Temperature Scale
Temperature Scale : (1) A graduated measure of the intensity of heat. (2) A thermometer scale. See also: Absolute Zero. NOTE: four temperature scales are used extensively: the celsius (centigrade), kelvin, and rankine scales in science and technology, and the fahrenheit scale, used popularly in english-speaking countries. the designation "centigrade" was officially replaced by "celsius" by the ninth general conference on weights and measures in 1948. the reaumur scale, on which the freezing point of water is 00 and boiling point 800, is now largely obsolete. conversion equations for the principal scales are C = (5/9) (F - 32), C = K - 273. 16, C = (5/9) (R - 491. 69), F = (9/5)C + 32, F = (9/5) (K - 273. 16) +32 F = R - 459. 69, K = C + 273. 16, K = (5/9) (F - 32) + 273. 16, K = (5/9) (R - 491. 69) + 273. 16, R = (9/5)C + 491. 69, R = F + 459. 69 and R = (9/5) (K - 273. 16) + 491. 69, where C is Celsius, F is Fahrenheit, K is Kelvin, and R is Rankine. Several representative temperatures in the four scales are compared in the following table: @@
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