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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.
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.
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 eleven character YouTube video identifier (64 possible characters used in each position), allows for a theoretical maximum of 64 11 or around 73.8 quintillion (73.8 billion billion) unique ids. YouTube announced that it would remove video responses for being an underused feature on August 27, 2013. [ 96 ]
As Walters held up the Bible, a coffee mug bearing a Latin phrase that translates to "If you want peace, prepare for war" sat to his right. Lee Greenwood's "God Bless the USA" Bible.Monday, Oct ...
Syrian rebel leader Ahmad al-Sharaa - better known as Abu Mohammed al-Golani - told Reuters in a written statement on Wednesday that he would dissolve the security forces of the toppled regime of ...
As well as a Preface, an Introduction and an Index, the book consists of 12 chapters, or papers, as the authors call them in their introduction. [1] Chapters 1 (Vagueness in Logic), 8 (Logic in an Age of Science) and 9 (A Confused "Semiotic") were written by Bentley; Chapter 10 (Common Sense and Science) by Dewey, while the remainder were signed jointly.
Rates for a 15-year mortgage stand at an average 6.16% for purchase and 6.17 for refinance, down 1 basis point from 6.17% for purchase and 1 basis point from 6.18% for refinance this time last ...