(mechanics) A unit of pressure, equal to the pressure exerted by a column of mercury 1 millimeter high with a density of 13.5951 grams per cubic centimeter under the standard acceleration of gravity; equal to 133.322387415 pascals; it differs from the torr by less than 1 part in 7,000,000. Abbreviated mmHg. Also known as millihg.
millimeter of mercury
| Sci-Tech Dictionary: millimeter of mercury |
(′mil·ə′mēd·ər əv ′mər·kyə·rē)
| 5min Related Video: millimeter of mercury |
| Measures and Units: millihg |
Millimetre of mercury (element Hg); see head of liquid.
[Farnwell H. W. Amer. J. Phys. Vol. 13, 349 (1939)]
Learn More
 | ultrahigh vacuum (physics) |
| torr (mechanics) |
| rotating viscometer vacuum gage (engineering) |
Help us answer these
Post a question - any question - to the WikiAnswers community:
Copyrights:
 |
 | Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved. Read more |
 |
| Measures and Units. A Dictionary of Weights, Measures, and Units. Copyright © Donald Fenna 2002, 2004. All rights reserved. Read more |
Related answers
- How do you convert from Pascals to millimeters of mercury?
- What is mm Hg an abbreviation for other than millimeters of mercury?
ADVERTISEMENT
Answer these
» More
Mentioned in
- ultrahigh vacuum (physics)
- torr (mechanics)
- rotating viscometer vacuum gage (engineering)
- thermocouple vacuum gage (engineering)
