[grey_whiskers]

'Tis Ok. My doctorate is in molecular collision theory, so I still remember some of it.

Cheers!

[Eye On The Left]

I wasn’t poking fun at you, but rather myself (you certainly seem to have an excellent understanding of these subjects). In any case, what I wrote about time and energy is apparently correct. I got it out of a not too old physics text book titled Basic Concepts in Relativity and Early Quantum Theory (by Robert Resnick). Many people can grasp the position and momentum uncertainty correlation, but are somewhat puzzled by the time and energy one.