Dan, Crushing rock candy is a piezo electric effect. Same thing can be some by striking two quartz rocks together. For a picture of natural Ball Lightning check http://www.abc.net.au/science/news/stories/s520317.htm Jeff At 16:21 -0700 03/12/2007, Dan Heim wrote: >Jeff, > >Oh yeah ... I done that microwave version. Very cool. I've also crushed >rock candy in a totally dark room. I don't know of any photos of natural >ball lightning. Here's the link to a cool shot of the latest lab version: >http://www.physorg.com/news68812957.html > >Dan -- Jeff Hopkins HPO SOFT Counting Photons http://www.hposoft.com/Astro/astro.html Hopkins Phoenix Observatory 7812 West Clayton Drive Phoenix, Arizona 85033-2439 U.S.A. (623)849-5889 (623) 247-1190 (Fax) www.hposoft.com -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.