Kelvin
= Kelvin
{title2=$\mathrm K$}
The kelvin is the SI unit of <thermodynamic temperature>, with symbol $\mathrm K$. Its definition fixes the numerical value of the <Boltzmann constant>; it is written without a degree sign.https://www.bipm.org/en/si-base-units/kelvin[BIPM, SI unit kelvin]{ref}