strange idea....now even stranger

Martin Czech martin.czech at intermetall.de
Wed Dec 22 14:28:42 CET 1999


:::paul perry melbourne australia
:::
:::BTW anyone making hand operated LFO generators, try using moire
:::effects and a LDR. You can photocopy line and screen patterns
:::onto overhead projection transparencies.

Reminds me of a toy I had: a motor with carton disk, more or
less shadowing a bulb so that more or less light will fall
onto a ldr. 


The very first tv scanners worked in a similar way.

More motors, more carton disks interfering with each other with strange
shapes ??

Hey , why not fix a ldr to your tv screen. I guess the horizontal
frequency of about 16kHz will not be visible in the ldr current,
because of ldr slowness. The 25Hz vertical blank will be seen.
Perhaps one can filter that away.

A nice source of incertainty...

m.c.




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