Is cm Hg equivelant to Pressure?
2007-03-12 04:17:28 · 4 answers · asked by Chocolate Strawberries. 4 in Science & Mathematics ➔ Physics
Centimetres or millimetres of Mercury. It's the pressure of air pushing down on a column of mercury.
2007-03-12 04:20:22 · answer #1 · answered by Meg W 5 · 0⤊ 0⤋
Mm Hg Stands For
2016-12-12 09:53:16 · answer #2 · answered by vaibahv 4 · 0⤊ 0⤋
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What does cm Hg or mm Hg in pressure mean? What does each alphabet stand for?
Is cm Hg equivelant to Pressure?
2015-08-18 19:43:07 · answer #3 · answered by ? 1 · 0⤊ 0⤋
Hg stands for Hygrargyrum, Latin for liquid silver. "Liquid silver" of course, means Mercury, which is one of the densest liquids easily available. To measure atmospheric pressure, the first scientists (Torricelli among others) used a glass tube filled with mercury turned upside down in a container filled with more mercury. This was the first barometer. It turns out that the air pressure is measured by the height of the mercury column, without any need to worry about the shape of the tube. So the height of the mercury column, measured in millimeters gives mm Hg. Note that millimeters were introduced with the French Revolution (approx. 1793) much later than Torricelli.
2007-03-12 04:28:27 · answer #4 · answered by f_leyvraz2001 2 · 1⤊ 0⤋
cm Hg = centimeters of Mercury
mm Hg = millimeters of Mercury
Hg is the Atomic Symbol in the periodic table for Mercury.
1 mm Hg = 133.322368 pascals
2007-03-12 04:21:13 · answer #5 · answered by Doctor Q 6 · 1⤊ 0⤋