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thermometer
(Encyclopedia)thermometer, instrument for measuring temperature. Galileo and Sanctorius devised thermometers consisting essentially of a bulb with a tubular projection, the open end of which was immersed in a liqui...thermocouple
(Encyclopedia)thermocouple: see thermometer; thermoelectricity. ...psychrometer
(Encyclopedia)psychrometer sīkrŏmˈĭtər [key], one of many instruments used for measuring the water vapor content or relative humidity of the atmosphere. It consists of two identical thermometers—the wet-bulb...Sanctorius
(Encyclopedia)Sanctorius săngktôrˈēəs [key], Ital. Santorio, 1561–1636, Italian physiologist. He was a professor at Padua (1611–24). By his quantitative experiments in temperature, respiration, and weight,...Beccaria, Giambattista
(Encyclopedia)Beccaria, Giambattista jämˌbät-tēˈstä bāk-kärēˈä [key], 1716–81, Italian physicist. He joined the Piarist order in 1732 and studied in Rome and Narni. After teaching at various Italian un...Celsius, Anders
(Encyclopedia)Celsius, Anders änˈdərs sĕlˈsēŭs [key], 1701–44, Swedish astronomer. While professor of astronomy at the Univ. of Uppsala (1730–44), he traveled through Germany, France, and Italy, visiting...humidity
(Encyclopedia)humidity, moisture content of the atmosphere, a primary element of climate. Humidity measurements include absolute humidity, the mass of water vapor per unit volume of natural air; relative humidity (...hygrometer
(Encyclopedia)hygrometer hīgrŏmˈətər [key], instrument used to measure the moisture content of a gas, as in determining the relative humidity of air. The temperature at which dew or frost forms is a measure of...Réaumur, René Antoine Ferchault de
(Encyclopedia)Réaumur, René Antoine Ferchault de rāˈəmyo͝or, Fr. rənāˈ äNtwänˈ fĕrshōˈ də rāōmürˈ [key], 1683–1757, French physicist and naturalist. He invented an alcohol thermometer (1731) a...radiometer
(Encyclopedia)radiometer rāˌdēŏmˈətər [key], instrument for detection or measurement of electromagnetic radiation; the term is applied in particular to devices used to measure infrared radiation. One of the ...Browse by Subject
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