Kelvin scale(redirected from Kelvin, Lord William Thomson)
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(General Physics) a thermodynamic temperature scale based upon the efficiencies of ideal heat engines. The zero of the scale is absolute zero. Originally the degree was equal to that on the Celsius scale but it is now defined so that the triple point of water is exactly 273.16 kelvins. The International Practical Temperature Scale (1968, revised 1990) realizes the Kelvin scale over a wide range of temperatures. Compare Rankine scale
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A scale of temperature beginning at absolute zero (-273.15°C). Each degree, or kelvin, has the same value as one degree on the Celsius scale. On the Kelvin scale water freezes at 273.15 K and boils at 373.15 K. See Note at Celsius.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
An absolute temperature scale in which 0 K (zero kelvin) equals -459.67°F (-273.15°C), absolute zero, and 273.15 K corresponds to 32°F (0°C).
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||Kelvin scale - a temperature scale that defines absolute zero as 0 degrees; water freezes at 273.16 degrees and boils at 373.16 degrees|
temperature scale - a system of measuring temperature
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