G Geek Active member Oct 19, 2011 #1 My sister won the science fair with a "frictionless puck" using CO2, two jars, and two hockey pucks. This is not that: More here. Read the comments on this post...
My sister won the science fair with a "frictionless puck" using CO2, two jars, and two hockey pucks. This is not that: More here. Read the comments on this post...
