when no air particles exist is called pls help me
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A vacuum is a space devoid of matter. The word is derived from the Latin adjective vacuus for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. ... For example, a typical vacuum cleaner produces enough suction to reduce air pressure by around 20%.
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A vacuum is a space devoid of matter. The word is derived from the Latin adjective vacuus for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. ... For example, a typical vacuum cleaner produces enough suction to reduce air pressure by around 20%.
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