What is vacuum?

  • (noun): A region empty of matter.
    Synonyms: vacuity
    See also — Additional definitions below


Vacuum is space that is empty of matter. The word stems from the Latin adjective vacuus for "empty" 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 sometimes simply call "vacuum" or free space, and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space. The Latin term in vacuo is used to describe an object as being in what would otherwise be a vacuum.

Read more about Vacuum.

Some articles on vacuum:

RMA Tube Designation
... nomenclature system for industrial, transmitting, and special-purpose vacuum tubes ... klystrons and inductive output tubes) L-- Vacuum capacitors N-- Crystal rectifiers (This designation lived on as the "N" in the EIA/JEDEC EIA-370 solid state device numbers standard, like 2N2222) P ...
John Hennon
... Pierre Duhem, in Le système du monde, isolates Hennon's account of the vacuum and a plurality of worlds ... Hennon believed that nature abhors a vacuum and therefore no natural void was possible, though God could create one ... of water will break upon freezing because nature abhors a vacuum ...
Vacuum - Examples
101.325 kPa 66 ... nm 2.5×1019 Vacuum cleaner approximately 80 kPa 70 ... nm 1019 liquid ring vacuum pump approximately 3.2 kPa 24 1.75 μm 1018 Mars atmosphere 1.155 kPa to 0.03 kPa (mean 0.6 kPa) 8.66 to 0.23 freeze ...
J. Schmalz Gmb H - Products
... Schmalz’s vacuum technology is utilized in production processes that require workpieces to be moved, ergonomically transported, or secured ... Vacuum components Vacuum components help a wide variety of users and industries to perform automation and handling tasks ... The range of products includes vacuum suction pads, vacuum generators, mounting elements and system monitors ...
J. Schmalz Gmb H
... from razor blades to transport equipment and finally to vacuum components, vacuum handling systems, vacuum gripping and clamping systems ... The company is in the sector of vacuum clamping technology and one of the suppliers of vacuum technology in the fields of automation and handling engineering, employing around 650 workers (2011) The ...

More definitions of "vacuum":

  • (noun): The absence of matter.
    Synonyms: vacuity
  • (noun): An empty area or space.
    Example: "Without their support he'll be ruling in a vacuum"
    Synonyms: void, vacancy, emptiness
  • (noun): An electrical home appliance that cleans by suction.
    Synonyms: vacuum cleaner
  • (verb): Clean with a vacuum cleaner.
    Example: "Vacuum the carpets"
    Synonyms: vacuum-clean, hoover

Famous quotes containing the word vacuum:

    Teenagers who are never required to vacuum are living in one.
    Fred G. Gosman (20th century)