The Barometer was invented by Italian Physicist Evangelista Toricelli in 1643.
The Barometer measures atmospheric pressure in units of measurement called atmospheres or bars.
There are two main types of Barometer:
Mercury Barometer
Aneroid Barometer
When there is a sudden fall in the barometer , it is an indication of Strom because the atmospheric pressure decreases all of a sudden during the storm.
The Barometric Pressure is an indicator of the weight of the column of air ranges from a historic high of 32.01 inches to an all-time low of 25.9 inches