What is particle "spin", and does it have anything to do with radio activity? I keep hearing about the "spin" of sub-atomic particles like such-and-such particle has a spin of 1/2 or 1. I heard even some have a spin of 2. And it also seems that I have heard that some radioactive particles have a higher spin (or lower - don't remember) than normal. Is this scorce on crack, or can you back-up/explain any of this? I'm just curious.