On Friday, May 2, 2014 4:51:40 PM UTC-5, woodchucker wrote:
Start watching from 5:44



https://www.youtube.com/watch?v=7kDG_oiUjew if you want to see how it

is made start from the beginning. This thing is really quick and easy.



--

Jeff

This looks promising:

http://www.geek.com/news/physics-exp...-time-1591725/

But expensive.