Boltzmann constant
Videos
The Boltzmann constant is the proportionality factor that relates the average relative thermal energy of particles in a gas with the thermodynamic temperature of the gas. It occurs in the definitions
Ludwig Boltzmann, the constant's namesake
Max Planck, who discovered and named the constant
Boltzmann's grave in the Zentralfriedhof, Vienna, with bust and entropy formula.
Kelvin
Videos
The kelvin is the base unit for temperature in the International System of Units. The Kelvin scale is an absolute temperature scale that starts at the lowest possible temperature, taken to be 0 K. By
Boltzmann constant
…relates the average relative thermal energy of particles in a gas with the thermodynamic temperature of the gas. It occurs in the definitions of the kelvin (K) and the molar gas constant, in Planck's law of black-body radiation and Boltzmann's entropy formula, and is used in calculating thermal noise in…
An ice water bath offered a practical calibration point for thermometers (shown here in Celsius) before the physical nature of heat was well understood.
Lord Kelvin, the namesake of the unit of measure.
Thermometer showing temperature in kelvin and degrees Celsius