Traditional Culture Encyclopedia - Weather forecast - What is a barometer?

What is a barometer?

Barometer is an instrument used to measure atmospheric pressure, which can predict the change of weather, and it will be sunny when the air pressure is high. When the air pressure drops, there will be stormy weather. Every time the mercury column with measurable height rises 1 2m, it will drop by about1mm, so the height of the mountain and the height of the plane in the air can be measured.

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