whirling thermometer

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• Thomas Barker — (1722 ndash; 29 December 1809) was a Rutland squire who kept a detailed weather record at Lyndon Hall from 1736 to 1798. Life and work Thomas Barker was born at Lyndon Hall, Lyndon, Rutland, England in 1722. He came from a distinguished local… …   Wikipedia

• Hygrometer — Not to be confused with hydrometer. A hygrometer (UK: /haɪˈɡrɒmɪtə/) is an instrument used for measuring the moisture content in the environmental air, or humidity. Most measurement devices usually rely on measurements of some other quantity …   Wikipedia

• sling psychrometer — noun Etymology: sling (III) : a psychrometer that can be whirled in the air until the reading of the wet bulb thermometer reaches a constant value * * * a psychrometer so designed that the wet bulb thermometer can be ventilated, to expedite… …   Useful english dictionary

• sling psychrometer — a psychrometer so designed that the wet bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air. * * * …   Universalium