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torr
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torr

Unit of pressure equal to 1/760 of an atmosphere, used mainly in high-vacuum technology.

One torr is equivalent to 133.322 pascals, and for practical purposes is the same as the millimetre of mercury. It is named after the Italian physicist Evangelista Torricelli.



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The pressure is measured in millimeters of mercury and recorded in two numbers.
Blood pressure readings are measured in units called millimeters of mercury (mm Hg).
[ILLUSTRATION OMITTED] During this brief exposure, diastolic blood pressure in volunteers inhaling the dirty air climbed an average of 4 to 5 millimeters of mercury.
 
 
 
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