[ema]

Hi maights...
I have the same info as mohammad said, and from the same referance(A Brief History Of Time BY stephen Hawking)
its easy, particles as you know divided into two types as thier spin:
1.Fermions,have halfs spins,means 1/2,3/2,5/2 and so on..while
2.Bosons: have integer spins,0,1,2..

What do the numbers mean?
particles have shaped as we know, now if you want to see the particle in the same first sight you see in you must turn it by spacific number(my english horrbile, i kno)
e.g photons: are bosons have spin equal 1, it means you must turned it 1 complete revolution to look like the 1st sight you saw..
if spin equal 2 you must turned it by 180degree(half complete revolution)..

like electrons: its fermions, have spin half;it means you must turned the electron tow complete revolutions(720 degree) to see it in the same shape again!!..


what about prticles which have spin equal zero??
this number means that this particle looks same from all sides, like POINT!!; seems one from all directions..


do you understand now? i hope that..
Best regards
Ema