brainwagon "There is much pleasure in useless knowledge." — Bertrand Russell

29Apr/060

Digital Inline Holography with a Laser Pointer

I hadn't heard of inline holography before, but apparently it was proposed decades ago by a short article in Nature by Gabor. Basically it is a technique by which interference patterns between an object and a reference wavefront is recorded, and then reconstructed in using clever math and the FFT.  Very neat.  Laser Pointer Holography

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29Apr/060

little tips about making rc micro_helicopter

It's been a busy week for me, wading through piles of SIGGRAPH sketch reviews, so I haven't had too much inclination to spend more time in front of a computer.   But I did find this article linked on the make blog: little tips about making rc micro_helicopter.  A very cool micro helicopter, which used a CDROM drive motor for the main drive.  Very cool.

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