Information for Mad Scientists

Lasers
Sam's Laser FAQ—The motherlode of information about lasers including building, powering and repairing many kinds of lasers. It goes back years so there's a lot of info about gas tube lasers.

Solar Astronomy
Solar Astronomy Forums
Charlie Bates' Solar Chat
Solar Yahoo Groups—search for "Lunt", "Coronado", "Solar" etc. There are several groups.

Solar astronomers
Greg Piepol—incredible photos | bio
Theo Bakalexis—solar reports from Greece-—pictures taken with a PST!

Nuclear
What is and is not a Geiger Counter (beginners ignore this at risk to your wallet)


Electrostatics


Tesla Coils


More to come...