Altitude and Pressure Display Device using a few off the shelf parts. Following a brief search, he zeroed in on the BMP 180 sensor which can measure temperature and pressure, and which is ...

Toriccelli also went on to develop the mercury barometer, an instrument used to measure atmospheric ... factors affect the density of air. Most measurably, as altitude increases, air becomes ...

There are lots of great air pressure demonstrations around, but a leaky water bottle is one of the simplest. It looks impressive and costs almost nothing.

and calculate the total force exerted by a gas or fluid against this fixed reference point, including atmospheric pressure.