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1874 — Herbert McLeod invents the McLeod gauge. 1885 — Calender-Van Duesen invented the platinum resistance temperature device. 1887 — Richard Assmann invents the psychrometer (Wet and Dry Bulb Thermometers) 1892 — Henri-Louis Le Châtelier builds the first optical pyrometer.
1870 – Clausius proves the scalar virial theorem. 1872 – Ludwig Boltzmann states the Boltzmann equation for the temporal development of distribution functions in phase space, and publishes his H-theorem. 1873 - Johannes Diderik van der Waals formulates his equation of state. 1874 – Thomson formally states the second law of thermodynamics.
A thermometer is a device that measures temperature (the degree of hotness or coldness of an object) or temperature gradient (the rates of change of temperature in space). A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in ...
Temperature measurement. A medical/clinical thermometer showing the temperature of 38.7 °C (101.7 °F) Temperature measurement (also known as thermometry) describes the process of measuring a current temperature for immediate or later evaluation. Datasets consisting of repeated standardized measurements can be used to assess temperature trends.
The following is a timeline of low-temperature technology and cryogenic technology (refrigeration down to close to absolute zero, i.e. –273.15 °C, –459.67 °F or 0 K). [1] It also lists important milestones in thermometry, thermodynamics, statistical physics and calorimetry, that were crucial in development of low temperature systems.
The history of thermodynamics is a fundamental strand in the history of physics, the history of chemistry, and the history of science in general. Due to the relevance of thermodynamics in much of science and technology, its history is finely woven with the developments of classical mechanics, quantum mechanics, magnetism, and chemical kinetics, to more distant applied fields such as ...
Daniel Gabriel Fahrenheit FRS (/ ˈfærənhaɪt /; German: [ˈfaːʁn̩haɪt]; 24 May 1686 – 16 September 1736) [1] was a physicist, inventor, and scientific instrument maker, born in Poland to a family of German extraction. Fahrenheit invented thermometers accurate and consistent enough to allow the comparison of temperature measurements ...
The timeline of meteorology contains events of scientific and technological advancements in the area of atmospheric sciences. The most notable advancements in observational meteorology , weather forecasting , climatology , atmospheric chemistry , and atmospheric physics are listed chronologically.