torr
Sign in to saveThe torr (symbol: Torr) is a unit of pressure based on an absolute scale, defined as exactly of a standard atmosphere (101325 Pa). Thus one torr is exactly (≈ ).
Key facts
- Unit.name
- torr
- Unit.quantity
- pressure
- Unit.symbol
- Torr
- Unit.namedafter
- Evangelista Torricelli
- Unit.extralabel
- Definition
- Unit.extradata
- atm
- Unit.units1
- SI derived units
- Unit.units2
- British Gravitational System
via Wikipedia infobox
Wikidata facts
- Instance of
- unit of pressure
- Named after
- Evangelista Torricelli
- Said to be same as
- millimetre of mercury
Show 5 more facts
- maintained by WikiProject
- WikiProject Mathematics
- conversion to SI unit
- 133.3223684211
- measured physical quantity
- pressure
- unit symbol
- Torr
- Wikidata SPARQL query equivalent
- wd:Q185648 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
Sources (3)
via Wikidata · CC0
~5 min read
Encyclopedic overview
7 sectionsContents
- Nomenclature and common errors
- History
- Manometric units of pressure
- Conversion factors
- See also
- References
- External links
The torr (symbol: Torr) is a unit of pressure based on an absolute scale, defined as exactly of a standard atmosphere (101325 Pa). Thus one torr is exactly (≈ ).
Historically, one torr was intended to be the same as one "millimetre of mercury", but subsequent redefinitions of the two units made the torr marginally lower (by less than 0.000015%).
Excerpted from Wikipedia’s “torr” article, available under the CC BY-SA 4.0 licence.