International Practical Temperature Scale


Also found in: Acronyms, Encyclopedia.
Related to International Practical Temperature Scale: ITS-90

International Practical Temperature Scale

n
(General Physics) a temperature scale adopted by international agreement in 1968, and revised in 1990, based on thermodynamic temperature and using experimental values to define 16 fixed points. The lowest is the triple point of an equilibrium mixture of orthohydrogen and parahydrogen (–259.34°C) and the highest the freezing point of copper (1084.62°C)
Mentioned in ?
References in periodicals archive ?
Bigge, The International Practical Temperature Scale of 1968 in the Region 90.188 K to 903.89 K as Maintained at the National Bureau of Standards, J.

Full browser ?