Holography without lasers: hand-drawn holograms

[bd]

http://amasci.com/amateur/holo1.html

[po]

Anyone who isn't familiar with amasci should know that it's an absolute treasure trove of information. Go to the "bad physics" page and you're guaranteed to spend days there reading:

http://www.amasci.com/miscon/miscon4.html

http://amasci.com/miscon/elect.html

Nothing ever made me feel better about not understanding certain concepts than this site.

[dimitar → po]

Thanks po and bd for sharing this site, I finally feel I understand voltage, el. current, el. devices. It is awesome!

[makmanalp]

A cool weekend project would be to come up with software that takes an image and projects it like this so it could be cnc'd on a lexan board.

[mquander → makmanalp]

http://3dalter.50megs.com/patterns.html

[po]

I did this many many years ago with some old CD-cases that I had given a light coating of black spray paint on the inside. It takes a while but works like a charm.

[eru]

That's way cool. I should try this.

The other material on this site is also worth a look.

[madmaze]

This is amazing. Blows my mind how he can have the patients to do that. I mean i can spend hours coding, but i dont think i could scratch plexiglass for hours. very cool thou!

[peterpeters → madmaze]

Agreed, but i still really want to give it a try

[kwamenum86]

This is the type of thing patents were invented for!