Question

Why is degree sign(°) not used in Kelvin(K)????

Answer 1

Absolute zero. In 1848, Kelvin usedthis as a basis for an absolute temperature scale. He defined "absolute" as the temperature at which molecules would stop moving, or "infinite cold." From absolute zero, heused the same unit as Celsius to determine the increments.



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Answer 2

Degree sign is not used in Kelvin as it's SI unit is particularly K

Kelvin is the 'natural' unit to measure temperature.

It means it's absolutely zero.