Answer to Question #67794 in Molecular Physics | Thermodynamics for JIMOH Sunday

Question

The fundamental interval of a thermometeric scale is

Answer 1

The fundamental interval of a thermometric scale is the distance between two fundamental temperatures, corresponding to equilibrium points of one-component systems (fixed points).
Example: The upper and lower points of Centigrade scale are 100 ℃ and 0 ℃ and the fundamental interval is 100 ℃.