Question

How a barometer measure pressure?

Answer 1

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━━━━━━━━━━━━━━━━━━━$\mathfrak{\green{Answer.}}$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, makingsome rise up the tube. The greater the air pressure, the higher the mercury rises
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