Recent content by nucular1

Very nice discussion of spacetime, Marcus et al. It is difficult to get folks to wrap their minds around the notion that space and time are inseparable and that there is no "center" or "edge" of the universe. Questions about what is "outside" or what came "before" the universe are nonsensical...

statistical factor in B-W formula Hi, The statistical factor in the Breit-Wigner cross section formula arises from the coupling of angular momenta. For a given reaction A + a -> B + b, or A(a,b)B in nuclear physics parlance, the entrance channel A + a has an associated channel spin S, which...