what is importance anomalous behavior of water by using Hope's Apparatus?
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➠➠This apparatus is used to determine the temperature at which water has the maximum density. Thick sheet metal construction with baked hammertone finish.
➠➠Hope's apparatus consists of a vertical vessel full of water surrounded round the middle by a trough of cooling ice. Two thermometers, one above and one below the trough, measure the temperature of the water. It is designed to demonstrate that water reaches its maximum density at 4 °C (39 °F).
➠➠As the water in the central part of the vessel cools towards 4 °C (39 °F) (and thus becomes denser) it sinks to the bottom of the vessel, displacing the warmer water. The lower thermometer will then read a constant 4 °C (39 °F). Further cooling towards 0 °C (32 °F) will cause the now less dense water to rise to the top of the vessel, where the upper thermometer will then read a constant 0 °C
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The water in the central part of the Hope's vessel cools towards 4 °C (39 °F) (and thus becomes denser) it sinks to the bottom of the vessel, displacing the warmer water. At this temperature the anomalous expansion of water occurs . Cooling towards 0 °C (32 °F) will cause the now less dense water to rise.