What you need to do is see how far away you can pop a balloon. Quoting Chuck Hards <chuck.hards@gmail.com>:
I just tried lighting a match with my laser, this time using a lens of 250mm focal length to focus the spot to a smaller size.
While before, the match took about six to eight seconds to ignite, with a focused beam it takes 2 to 3 seconds. Smoke forms almost instantly.
Dark match heads work best. White ones never ignite, I have to color them black with a Sharpie. Matches stored in the garage (camping gear) also never seem to ignite, perhaps from absorbing too much moisture from the air. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com