By: D'j West
formula for pressure
- a barometer is a device used to measure atomspheric pressure.
- the barometer was introduced to the world in 1600's by Evangelista Torricelli
- he discovered pump could only raise water 34 feet high
How Does a Barometer Work?
- a common unit of measuring pressure is millimeter of mercury(Hg)
- pressures can also be measured in unit of atmospheres
- because the averge atmospheric at sea level at 0 degrees celcius is, 760mm Hg