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  2. Barometer - Wikipedia

    en.wikipedia.org/wiki/Barometer

    Using vacuum pump oil as the working fluid in a barometer has led to the creation of the new "World's Tallest Barometer" in February 2013. The barometer at Portland State University (PSU) uses doubly distilled vacuum pump oil and has a nominal height of about 12.4 m for the oil column height; expected excursions are in the range of ±0.4 m over ...

  3. Torricelli's experiment - Wikipedia

    en.wikipedia.org/wiki/Torricelli's_experiment

    Wellcome V0005861. Torricelli Invented the mercury barometer, recorded in the books of Camille Flammarion (1923) Torricelli's experiment was invented in Pisa in 1643 by the Italian scientist Evangelista Torricelli (1608-1647). The purpose of his experiment is to prove that the source of vacuum comes from atmospheric pressure.

  4. Vacuum Oil Company - Wikipedia

    en.wikipedia.org/wiki/Vacuum_Oil_Company

    Vacuum Oil Company was an American oil company known for its Gargoyle 600-W steam cylinder motor oil.After being taken over by the original Standard Oil Company and then becoming independent again, in 1931 Vacuum Oil merged with the Standard Oil Company of New York to form Socony-Vacuum, later renamed to Mobil and eventually merging with Standard Oil of New Jersey (itself renamed to Exxon) to ...

  5. Bert Bolle Barometer - Wikipedia

    en.wikipedia.org/wiki/Bert_Bolle_Barometer

    The Bert Bolle Barometer is a large water barometer. At over 12.5 metres tall, it is recognized as the largest barometer in the world by The International Guinness Book of Records. [1] The instrument was created in 1985 in the Netherlands; in 2007 it was reinstalled in the new Visitor Centre of Denmark, Western Australia and was removed from ...

  6. Vacuum pump - Wikipedia

    en.wikipedia.org/wiki/Vacuum_pump

    In the field of oil regeneration and re-refining, vacuum pumps create a low vacuum for oil dehydration and a high vacuum for oil purification. [44] A vacuum may be used to power, or provide assistance to mechanical devices. In hybrid and diesel engine motor vehicles, a pump fitted on the engine (usually on the camshaft) is used to produce a vacuum.

  7. Mercury pressure gauge - Wikipedia

    en.wikipedia.org/wiki/Mercury_pressure_gauge

    The tube is sealed during manufacture with the sealed end containing a vacuum. [1] Mercury is a useful material to use in a manometer because of its high density. This means that a much shorter column is needed compared to water. [2] For instance, the pressure represented by a column of 100 mm of water is just under 7.4 mm of mercury . [3]