Recent content by FredJR

Thanks guys, but those aren't quite what I'm looking for. I may be imagining it, it was a long time ago, but I vaguely remember from cosmology there was a relationship between the physical constants that was dimensionless. I've wikipedia'd and googled and not found it. Thanks for your help.

Folks, I remember once seeing an equation that linked all the important fundamental constants - electron charge/alpha, gravitational constant, planks constant, speed of light, electron mass etc - in a dimensionless relationship. But for the life of me I cannot find it -google doesn't know...

Thanks Simon Bridge for your answer. I don't think you quite got the bit I was stuchk at, maybe my question wasn't well worded. However Bill_K managed to work out what I was looking for and provide and answer. I'll read up on my QCD. Thanks to both of you for your answers. Regards

Physicists often remark about the absence of antimatter in the universe. My question here sounds simple, but the answer has proved elusive to me. Perhaps someone here can shed some light. The question is: What is the physical property that "matter" has that distinguishes it from...