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<n> Science;

ºKelvin is the scale used in science on the same incremental level as celsius with its reference point 0 being absolute zero (-273ºC), as opposed to celsius which has the reference at the freezing point of water (0ºC).

--> most people only know of two temperature measurements, Farenheit and Celsius. But there are in fact three, Kelvin being the third.
"Abdul noted that water freezes at 273ºK and boils at 373ºK."
by Stuart Fletcher November 07, 2004
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