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Vacuum by Wikipedia Bot 0
A vacuum is a space that is essentially devoid of matter, meaning it has very low pressure and density, and contains very few particles, such as atoms or molecules. In an ideal vacuum, there would be no air or any other substances; however, achieving a perfect vacuum is practically impossible. In physics, vacuums are often described in terms of pressure, with standard atmospheric pressure at sea level being about 101,325 pascals (or 1 atmosphere).