Question

introduction of operators and its applicationintroduction of hope's Apparatus and its application ​

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Hope's apparatus. [′hōps ‚ap·ə‚rad·əs] (thermodynamics) An apparatus consisting of a vessel containing water, a freezing mixture in a tray surrounding the vessel, and thermometers inserted in the water at points above and below the freezing mixture; used to show that the maximum density of water lies at about 4°C.