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A scale for measuring temperature such that the absolute temperature T is given in terms of the temperature on the Dalton scale by T 273.15(373.15/273.15)/100.



Related Terms

ABSOLUTE TEMPERATURE SCALE

A scale of temperature measurement in which zero degrees is absolute zero.

KELVIN TEMPERATURE

Temperature based upon a thermodynamic scale with its zero point at absolute zer

MONOCHROMATIC TEMPERATURE SCALE

A temperature scale based upon the amount of power radiated from a blackbody at a single wavelength.

CELSIUS TEMPERATURE SCALE

Temperature scale of 0o (freezing water) to 100o (boiling water). Celsius = (Fahrenheit - 32) x 5/9.

KELVIN SCALE

The basic scale used for temperature definition; the triple point of water (comprising ice, liquid, and vapor) is defined as 273.16 K; given two reservoirs, a reversible heat engine is built operating in a cycle between them, and the ratio of their temperatures is defined to be equal to the ratio of the heats transferred.

RADIATION

All warm bodies emit light (electromagnetic radiation, mostly infrared). When this radiation is absorbed or emitted by a body, heat is transferred and termed 'heat transfer by radiation'. Such heat transfer requires a line of sight (view factor) and is proportional to the fourth power of the absolute temperature difference between bodies and the emissivity of the bodies.

ABSOLUTE TEMPERATURE

The fundamental temperature scale with its zero at absolute zero and expressed in degrees Kelvin. One degree Kelvin is equal to one degree Celsius or one degree Centigrade. For the purpose of practical calculations in order to convert Celsius to Kelvin add 273. It is normal for the degree Kelvin to be abbreviated in mathematical formulae to ‘K’ with the degree symbol being omitted.

CURLE SCALE OF TEMPERATURE

A temperature scale based on the susceptibility of a paramagnetic substance, assuming that it obeys Curie's law; used at temperatures below about 1 kelvin.

FAHRENHEIT TEMPERATURE

Temperature based on a scale in which, under standard atmospheric pressure

CRITICAL EXPONENT

A parameter n that characterizes the temperature dependence of a thermodynamic property of a substance near its critical point; the temperature dependence has the form PT TcPn, where T is the temperature and Tc is the critical temperature.

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