Absolute Temperature

Key Stage 5

Absolute temperature is the measure of temperature starting from absolute zero, typically measured in Kelvin (K).

Absolute temperature uses the Kelvin scale, where 0 K represents absolute zero.
Absolute zero is the point where a system has minimum internal energy.
The Kelvin scale is an absolute thermodynamic temperature scale.
Absolute temperature differs from Celsius and Fahrenheit scales in that it starts at absolute zero.
Absolute temperature is crucial for calculations in thermodynamics and statistical mechanics.
At absolute zero, entropy of a perfect crystal is zero according to the third law of thermodynamics.
Kelvin is defined based on the triple point of water (the temperature and pressure at which water can exist as a solid, liquid or a gas) simultaneously, precisely 1/273.16 of the thermodynamic temperature of the triple point of water.