Machin, G (2024) Evolution of Temperature measurement – beginnings, progress and prospects. Journal of Physics: Conference Series, 2877. 012112

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Abstract

This paper starts by charting the development of temperature measurement from its beginnings with the thermoscope in the late 1500s, through to liquid-in-glass and air thermometers in the 1600s and 1700s. The emergence of classical thermodynamics, which put thermometry onto a sound physical footing, is then briefly described as is the convergence of practical and thermodynamic thermometry in the late 1880s and early 1900s through the use of defined scales, which became the benchmark for reliable thermometry throughout the 20th Century and beyond. Finally, an outline of the kelvin redefinition in 2019, and its implications, is given followed by a discussion of the prospect of driftless practical primary thermometry across a wide temperature range by the 2050s.

Item Type:	Article
Keywords:	Thermometry, history
Subjects:	Engineering Measurements > Thermal
Divisions:	Thermal & Radiometric Metrology
Identification number/DOI:	10.1088/1742-6596/2877/1/012112
Last Modified:	12 May 2025 14:32
URI:	https://eprintspublications.npl.co.uk/id/eprint/10161