Explain the construction and working of simple barometer
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construction of Barometer
The working of Barometer is written below:
Photo: A Torricellian barometer (sometimes called a mercury barometer) is an inverted (upside-down) glass tube standing in a bath of mercury. Air pressure pushes down on the surface of the mercury, making some rise up the tube. The greater the air pressure, the higher the mercury rises.
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The glass tube is sealed at one end and is filled with mercury completely. ... It is the atmospheric pressure acting on the surface of the mercury in the trough that supports the vertical mercury column. The empty space above the mercury column is called the 'Torricellian vacuum'.
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