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Ultra-high vacuum (often spelled ultrahigh in American English, UHV) is the vacuum regime characterised by pressures lower than about 1 × 10 −6 pascals (1.0 × 10 −8 mbar; 7.5 × 10 −9 Torr). UHV conditions are created by pumping the gas out of a UHV chamber.
UHV may refer to: Ultra-high vacuum, the vacuum regime characterised by pressures lower than about 10 −7 pascal; Ultra-high voltage, a classification of overhead power line with an operating voltage of higher than 800 kV; University of Houston–Victoria, a university in Victoria, Texas, US
The langmuir (symbol: L) is a unit of exposure (or dosage) to a surface (e.g. of a crystal) and is used in ultra-high vacuum (UHV) surface physics to study the adsorption of gases. It is a practical unit, and is not dimensionally homogeneous, and so is used only in this field. It is named after American physicist Irving Langmuir.
This series came from a determination to understand why, and to explore how their way back from war can be smoothed. Moral injury is a relatively new concept that seems to describe what many feel: a sense that their fundamental understanding of right and wrong has been violated, and the grief, numbness or guilt that often ensues.
As the new year approaches, many people begin thinking about their resolutions—typically focusing on physical health, saving money, or spending more time with family. One area that often gets ...
In the Pali Canon's Bhāvanānuyutta sutta ("Mental Development Discourse," [note 1] AN 7.67), the Buddha is recorded as saying: . Monks, although a monk who does not apply himself to the meditative development of his mind [bhavana [note 1]] may wish, "Oh, that my mind might be free from the taints by non-clinging!", yet his mind will not be freed.
There are less than 20 days until Christmas but for some Americans, holiday celebrations commence even sooner. While it's not celebrated nationwide, St. Nicholas Day holds a special place for ...
Israel has taken some measures to increase aid access to Gaza but has so far failed to significantly turn around the humanitarian situation in the enclave, State Department spokesperson Matthew ...