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Kelvin temperature scale

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Kelvin temperature scale, a temperature temperature, measure of the relative warmth or coolness of an object. Temperature is measured by means of a thermometer or other instrument having a scale calibrated in units called degrees. The size of a degree depends on the particular temperature scale being used.
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 scale having an absolute zero below which temperatures do not exist. Absolute zero absolute zero, the zero point of the ideal gas temperature scale, denoted by 0 degrees on the Kelvin and Rankine temperature scales, which is equivalent to −273.15°C; and −459.67°F;.
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, or 0°K;, is the temperature at which molecular energy energy, in physics, the ability or capacity to do work or to produce change. Forms of energy include heat, light, sound, electricity, and chemical energy. Energy and work are measured in the same units—foot-pounds, joules, ergs, or some other, depending on the
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 is a minimum, and it corresponds to a temperature of −273.15° on the Celsius temperature scale Celsius temperature scale , temperature scale according to which the temperature difference between the reference temperatures of the freezing and boiling points of water is divided into 100 degrees.
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. The Kelvin degree is the same size as the Celsius degree; hence the two reference temperatures for Celsius, the freezing point of water (0°C;), and the boiling point of water (100°C;), correspond to 273.15°K; and 373.15°K;, respectively. When writing temperatures in the Kelvin scale, it is the convention to omit the degree symbol and merely use the letter K. The temperature scale is named after the British mathematician and physicist William Thomson Kelvin Kelvin, William Thomson, 1st Baron, 1824–1907, British mathematician and physicist, b. Belfast. He was professor of natural philosophy at the Univ. of Glasgow (1846–99).
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, who proposed it in 1848. Another absolute temperature scale, the Rankine temperature scale Rankine temperature scale, temperature scale having an absolute zero, below which temperatures do not exist, and using a degree of the same size as that used by the Fahrenheit temperature scale.
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, is used by some engineers. See also Fahrenheit temperature scale Fahrenheit temperature scale , temperature scale in which the temperature difference between two reference temperatures, the melting and boiling points of water, is divided into 180 equal intervals called degrees.
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Kelvin temperature scale [′kel·vən ′tem·prə·chər ‚skāl]
(thermodynamics)
An International Temperature Scale which agrees with the Kelvin absolute temperature scale within the limits of experimental determination.


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Byline: Malcolm Wallace SCOTLAND is the nation responsible for providing the world with such scientific advances as anaesthetic, penicillin, pneumatic tyres, refrigerators, mobile steam engines, telephones, televisions, radar, tarred roads and the Kelvin temperature scale to name but a few.
 
 
 
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