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Do This

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Do This

Postby E-lad » Wed Jul 11, 2012 2:03 pm

Point your TV remote control at yourself and press and hold the up volume button. What do you see? Nothing.

Now do the same thing and look at the remote control's sender element through your cell phone or your digital camera. What do you see?
Life is a comedy for those who think, and a tragedy for those who feel.- Horace Walpole
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Re: Do This

Postby lehman scott » Thu Jul 12, 2012 9:06 pm


Cool! 940 nm, near infrared, just low enough to be invisible to your eye, and the camera photoreceptors don't go low enough to pick up normally-occurring IR EM emissions. Fascinating, Froggie!
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Pessimism of the Intellect; Optimism of the Will.
- - Antonio Gramsci
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