Recent content by owenhuang

thanks !

ok ,get it !

I am confused by eta meson and eta prime meson . I can not the difference between them .anybody can help me ? who can tell me what are they made up ? some textbook say that the neutral eta meson is considered to be a quark combination (uubar+ddbar-2*ssbar)/6^(1/2),but I am still not clear.

I am confused by eta meson and eta prime meson ?what is the difference between the two ones ? who can tell me what are they made up ? please help me ! thank you very much !

But how to calculate the gravity between two lights ?we know light is massiveless when v=0,but v=c !