Press, Volume, Temperature (PVT) Relationships: Knowing R allows us to calculate any of the four variables in an ideal gas system if other three things are known to us. It is important in various ...

The Committee on Nomenclature, Terminology & Symbols (NTS) serves the American Chemical Society community through its review, recommendation, and action on matters related to the title of the ...

In physics, there are a host of standard constants: the speed of light, the charge-to-mass ratio of the proton, and Planck's constant, to name just a few. Repeated measurements going back a few ...

It seems that nothing stays the same: not even the 'constants' of physics. An experiment suggests that the mass ratio of two fundamental subatomic particles has decreased over the past 12 billion ...