Why do we use Kelvin as an si unit to calculate temperature?

Question

Why do we use Kelvin as an si unit to calculate temperature?

In: 3

Answer 1

Kelvin is defined such that 0 K is the complete absence of any thermal energy. As such, it’s useful to have a scale where 0 actually corresponds to, well, absolute zero (compared to, say, Celsius, where 0 is just the freezing point of water).