On Sat, Apr 27, 2013 at 1:34 PM, Axil Axil <[email protected]> wrote:
> Protons and neutrons are bound by the strong nuclear force, which is > mediated by gluons and described by the theory of quantum chromodynamics > (QCD). Unlike photons, which mediate the electromagnetic force, gluons can > interact with each other. It is this self-interaction that generates around > 99% of the visible mass in the universe, while only the remaining 1% is > provided by the intrinsic masses of quarks. > Thank you, Brookhaven National Laboratory. ;) http://www.bnl.gov/rhic/inside/news.asp?a=2465&t=today Eric
