Establishing thermodynamic temperature with noise thermometry
Callegaro, Luca Electromagnetism Division, Istituto Nazionale di Ricerca Metrologica, Torino, Italy.
- Johnson noise thermometry
- Absolute Johnson noise thermometry experiments
- Links to Primary Literature
Thermodynamic temperature T is a measure of the average energy content of the constituents of matter in equilibrium. The link between thermodynamic temperature and this energy content is the Boltzmann constant k. According to statistical mechanics, if the thermodynamic temperature of a given system is T, then the average energy of each of its accessible degrees of freedom is of the order of kT. (The precise definition of the Boltzmann constant takes into account other physical concepts, in particular, entropy, and will not be discussed here.)
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