Air - Air pressure - Barometers

4 important questions on Air - Air pressure - Barometers

How to you call a device that messures the pressure in the air?

A barometer.

What types of barometers do exists?

There are two types of barometers: de traditional aneroid barometer that works and the digital barometer.

How does a aneroid barometer work?

The traditional aneroid barometer is a metal box where most of the air has been pumped out. A strong spring makes sure the air pressure can not squash the box. The upper and lower sides are very thin. When the air pressure increases (stijgt), the box will be compressed a bit more and the meter on the dial face will go up. When the air pressure decreases (daalt), the opposite happens.
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What kind of barometer has sensors to messure the air pressure?

A digital barometer.

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