"Things You Wouldn't Know If We Didn't Blog Intermittently."
Shoot, I just took our old rear projection TV to the tip. If I'd known this I'd of kept the fresnel lense for a home experiment for the kids.
And why aren't we using this to generate copious amounts of electricity?
Pete, I've lost a link I saw earlier this week claiming that if the U.S. had put the same amount of subsidy $$ into solar as we have into oil over the past several decades, we would be solar-powered.