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Vacuum

A vacuum (pl.: vacuums or vacua) is space devoid of matter. The word is derived from the Latin adjective vacuus (neuter vacuum) meaning "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they…

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Overview

Etymology

Historical understanding

Classical field theories

Quantum mechanics

Outer space

Measurement

Uses

Effects on humans and animals

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Vacuum

Nodes256
Edges255
Triples191
Avg. degree1.99
Density0.007813
Components1

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Vacuum

Top relations

related to External links · 29
Vacuum → Barrow, Berndt Muller, Bibcode, Canadian, Discussion, Doctor PThe Foundations, Fundamentals, Gresham CollegeFree, High Energy Physics, ISBN, Johann Rafelski, Leybold, Mark, Much Ado About Nothing, PDF, Production, Professor John, Roberts, SocietyJournal, Space
measured by · 26
Vacuum → As, Below, But, Earth, Earth's, In, ISO, Italian, Low, Many, MFP, Moon, On, One, Pa, SI, Similarly, The, The Crookes, The MFP
related to References · 15
Vacuum → Da Capo Press, Electrodynamics, Geometry, Henning Genz, ISBN, Johns Hopkins University Press, Luciano Boi, Microscopic World, Nothingness, Philosophical Concept, Scientific, Space, String Theory, The Quantum Vacuum, The Science Of Empty
has effect · 14
Vacuum → Although, Animal, CAPS, Crew Altitude Protection Suit, Humans, Limbs, NASA, Rapid, Robert Boyle, Shuttle, Swelling, The, There, Torr
related to Vacuum-driven machines · 14
Vacuum → AI, Attitude Indicator, Autovac, Heading Indicator, HI, In, Isambard Kingdom Brunel's, Manifold, Obsolete, Some, The, The Newcomen, UK, Vacuums
related to Historical understanding · 12
Vacuum → AD, Alexandria, Ancient Greek, Aristotle, BC, Following Plato, Hero, Historically, In, IV, Lucretius, Physics
related to Measuring instruments · 12
Vacuum → An, Any, Hydrostatic, Many, McLeod, Other, Pa, Simple, The, The McLeod, These, U-shaped
related to Quantum mechanics · 11
Vacuum → As, Coulomb's, Even, Hilbert, In, In QED, Lamb, Nonetheless, QCD, QED, Some
related to Outer space · 9
Vacuum → Astrophysicists, Beyond, But, Kármán, Outer, Stars, Sun, The, The Earth's
related to Outgassing · 8
Vacuum → All, Evaporation, High, It, Outgassed, Outgassing, The, This

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Important terminology

pressure space atmospheric used torr outgassing air high called gas system may low pressures much 10 particles century pump energy

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Vacuumis aregion with a gaseous pressure much less than atmospheric pressure0.90text
Vacuumis aregion of space and time where all the components of the stress0.90text
Vacuumis astate with no matter particles0.90text
Vacuumis aideal state of no particles at all0.90text
Roger Baconinstance ofand later appeared in Europe from the 15th century.European scholars0.80text
Blasius of Parmainstance ofand later appeared in Europe from the 15th century.European scholars0.80text
Walter Burley in the 13thinstance ofand later appeared in Europe from the 15th century.European scholars0.80text
14th century focused considerable attention on issues concerning the concept of a vacuuminstance ofand later appeared in Europe from the 15th century.European scholars0.80text
vacuum tubesinstance ofwhich is on the order of everyday objects0.80text
stainless steel or titanium must be consideredinstance ofand even the adsorptivity of hard metals0.80text
Vacuumhas effectHumans0.60section
Vacuumhas effectThe0.60section

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