richbuff
Flashlight Enthusiast
http://www.spacedaily.com/reports/Physicists_create_new_form_of_light_999.html
"Try a quick experiment: Take two flashlights into a dark room and shine them so that their light beams cross. ... ..."
"Try a quick experiment: Take two flashlights into a dark room and shine them so that their light beams cross. ... ..."