I put a challenge to the community: to make a Large Hadron collider or something similar. for info, here it is:

http://en.wikipedia.org/wiki/Large_Hadron_Collider

Any element can be used, but the colliding particle must not touch a wall.

Have fun.

Ps, i will try to make one too.

Ok, here are the rules:

- Can be any shape and size.
- Particles must not touch the walls or surrounding particles
- can use any element

That about it. this is only for fun. there are no prizes, just to see if it is possible, cos it is probably quite hard.

Have Fun!

atually, ill make it so it can touch fan, but only fan, nothing else. plus, try to make it failsafe, so everytime it works.