Also known as: vac., vac..
VAC has various meanings in the Internet - SMS - Text & Chating category. Discover the full forms, definitions, and usage contexts of VAC in Internet - SMS - Text & Chating.
Pressure less than atmospheric pressure. It is usually expressed in inches of mercury (Hg) as referred to the existing atmospheric pressure. A vacuum is a space that has no pressure and no molecules inside. It is truly and empty space. Although space has a very low pressure (almost a vacuum), there are still particles out there. A volume which contains no matter. A completely empty space. The collapsing can experiment shows the effect of the pressure of gas particles.
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