Does Anybody Know What.....

[trt]

the gadget is called that you see on peoples desk that have about 6/8 silver balls, that when you swing the first one it makes the other end ball move?

[sunny-dave]

Newton's Cradle

[sunny-dave]

http://static.ddmcdn.com/gif/newtons-cradle-1.jpg

[Smowball]

Ive got one : )

[ELVIS68]

I've got two ;o)

[vulcan]

try it yourself
http://www.lhup.edu/~dsimanek/scenario/newton.htm