The idea for the muon experiments – the name of which was just too much fun to not use! - started out driving back from somewhere with the concept of e=mc2 ... which lead to too many ideas that evening on the porch all revolving like an electron around the atom. The girls' hula hoops and the one bouncy ball that still held air would have to do until the next morning when the Craft Barn would open again. So Friday night and into Saturday morning, much time went into trying to get the hoops and ball all to appear to be floating, but most importantly, they had to be concentric. This was the easy part. In visually communicating the idea of mass traveling at the speed of light2, all I could think of was playing around with zooming while taking the exposure... and that's all I did all night and then much of Saturday. The tricky parts were 1) lighting and 2) the rate of zooming. It was all experimental and great fun. Some of the experiments can be examined in the Flash slideshow here. Below is a setup shot with a wee bit of annotation to help explain things further. - Kelly