A barometer may be constructed by immersing the open end of a glass tube that is partially filled with water and sealed at the other end, into a jar of water, leaving an air space above the water in the tube. It is proposed to measure changes in atmospheric pressure by changes in the height of the water in the column. Describe what effects might intrude to give erroneous readings of the actual pressure changes.

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The Answer of A barometer may be constructed by immersing the open end of a glass tube that is partially filled with water and sealed at the other end, into a jar of water, leaving an air space above the water in the tube. It is proposed to measure changes in atmospheric pressure by changes in the height of the water in the column. Describe what effects might intrude to give erroneous readings of the actual pressure changes.

A Barometer May Be Constructed by Immersing the Open End