What is mmhg used for

And the height the mercury rises to is a convenient measure of atmospheric pressure and can be read off using a simple ruler. We could use mm of water, but would need a much longer tube and an unusually inconveniently sized ruler. Hence why mercury is the fluid and a convenient way of measuring pressure is mm of Hg.

We tend to use modern SI units for pressure these days, not least because the wide use of mercury has been banned and calculations in consistent nits are far easier. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Why is gas pressure measured in mmHg? Ask Question. Asked 1 year, 7 months ago.

Hg: Symbol for the metallic element mercury. The abbreviation "mm Hg" means millimeters of mercury, the height of a column of mercury, as in a blood pressure reading. Mercury is poisonous to people. See Mercury poisoning. What is STP in chemistry? STP most commonly is used when performing calculations on gases, such as gas density. What is the unit mm? The millimetre international spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm or millimeter American spelling is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length.

There are ten millimetres in a centimetre. What is the unit of blood pressure? Blood pressure is usually expressed in terms of the systolic pressure maximum during one heartbeat over diastolic pressure minimum in between two heartbeats and is measured in millimeters of mercury mmHg , above the surrounding atmospheric pressure.

What is Hg in pressure? It is used for barometric pressure in weather reports, refrigeration and aviation in the United States. It is the pressure exerted by a column of mercury 1 inch What is good blood pressure? What is mmHg? The higher the pressure inside the fluid, the more likely your blood will flow quickly. What should I look for when shopping for compression socks? You can typically find this number on the packaging or the tag of the sock. Unless prescribed by your physician, anything over 30 mmHg is a little too much and may cause issues with your circulation.

If you are interested in all the different, strange units that are used to measure pressure, I wrote an entire article explaining what each unit is, and how to convert between them. Skip to content mmHg stands for millimeters of mercury. Continue Reading.