vacuum

Was thinking about that wonderful scene in 2001 when Dave Bowman blasts himself into an airlock with no helmet on. Then I started thinking... if you go from say normal atmospheric pressure, to vacuum, to normal atmospheric pressure again, even in a short space of time like 10 seconds, wouldn't...

I'm not really sure if I'm asking this question properly or not, as I'm not experienced in physics, but here goes: Does an infinitely large, or even better, any size vaccum, have a mass or a gravitational pull? I'm virtually illiterate in the study of physics, so where possible please respond...

I was thinking the other day about a problem involving pumps. Many pumps, even industrial ones that cost $40k+ can't prime themselves, meaning if they're full of air they can't suck water up to get started. Also many can't pump from a tank any lower than about a meter below them. In fact there...

I’m looking for some help/opinions on a potential safety problem where I work. At issue is a vacuum chamber. It is 20 ft. (6.096 meters) in diameter and 27 ft. (8.2296 meters) high. It has a domed top, which contains a flanged port capable of accepting a transparent window. The diameter of...

In the flag on the moon thread, a poster mentioned using scuba gear to breath in a vacuum. If I remember correctly, scuba regulators are designed to deliver air to the lungs at the same pressure as the environment. In a vacuum, the regulator valve would stay closed keeping all the air in the...