[Allan] needed a small vacuum chamber to get all the air out of clear casting resin. Degassing is a simple step in casting that improves the finished product immensely. The problem, though, is ...

Cool idea: NIST’s Daniel Barker, Steve Eckel, Jim Fedchak, Julia Scherschligt and colleagues have developed and tested a technique that uses cold atoms to measure ultralow pressures. (Courtesy: NIST) ...

Fig 1. Atmospheric pressure vs. elevation. The relationship between elevation and atmospheric (atm) pressure is non-linear as represented by this graph. Photo Credit: Abaris, as adapted from The ...

Pressure is the amount of force applied per unit area. Pressure can be measured by a pressure gauge, but it is important to know the type of pressure the gauge is reading. This article will cover the ...

One of the most difficult tuning problems to overcome is the seemingly ever-present engine vacuum leak. Vacuum is an important component of the internal-combustion process because it controls basic ...