A barometer is a tool meteorologists use to measure atmospheric pressure, which is defined using millibars (mb). The layers of air in the Earth’s atmosphere has weight to it - which is pulled ...

The Air up there: Build your own barometer to measure atmospheric pressure Posted: Apr 27, 2020 / 02:23 AM EDT. Updated: Apr 27, 2020 / 02:24 AM EDT.

Now for the fun part. Suppose I use a barometer to measure the atmospheric pressure on the ground floor of a building. As ride the elevator up, the atmospheric pressure decreases.

Extra: Take your barometer outside to measure atmospheric pressure. Draw a scale that looks like a ruler on another piece of paper. Then place the chart next to the barometer so that the middle ...