2006-09-06 15:21:17 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Weather
Evangelista Torricelli invented the first mercury barometer in 1643. A barometer is an instrument used to measure atmospheric pressure.
Torricelli had set out to create an instrument to measure the weight of air, or air pressure, and to study the nature of vacuums. He documented that the height of the mercury in a barometer changed slightly each day and concluded that this was due to the changing pressure in the atmosphere. The mercury barometer's design gives rise to the expression of atmospheric pressure in inches or millibars: the pressure is quoted as the level of the mercury's height in the vertical column. 1 atmosphere is equivalent to about 29.9 inches, or 760 millimeters, of mercury.
2006-09-06 21:22:18 · answer #1 · answered by ♥ lani s 7 · 1⤊ 0⤋
Evangelista Torricelli
1608 - 1647
Evangelista Torricelli was an Italian scientist who was the first man to create a sustained vacuum and to discover the principle of a barometer. He also achieved some important results in the development of the calculus.
2006-09-07 04:13:09 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The barometer, and Torricelli is honored with the unit of vacuum measurement, the Torr.
2006-09-06 15:25:25 · answer #3 · answered by auntiegrav 6 · 1⤊ 0⤋
the barometer, i got it from yahoo page the link on the source, and it was named the torricelli tube
2006-09-06 15:23:52 · answer #4 · answered by Tori V 1 · 1⤊ 0⤋
Barometer.
2006-09-06 15:23:10 · answer #5 · answered by Alan Turing 5 · 1⤊ 0⤋
I find that the Yahoo weather gives me more of an accurate weather forecast than the local weather channels
2016-03-27 00:56:45 · answer #6 · answered by Anonymous · 0⤊ 0⤋
The column (mercury) barometer.
2006-09-06 15:23:40 · answer #7 · answered by Anonymous · 1⤊ 0⤋