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Friday, August 24, 2012


Bill Fleming

You will recall that in the old western movies something like that used to happen with the wagon wheels. Sometimes they'd seem to be spinning forward, sometimes backward, and occasionally just standing still. It also used to be difficult to get a picture of a TV screen with a video camera for much the same reason, matching scanning speeds. Finally, noise reduction systems work along the same lines.

Ken Blanchard

I hadn't thought about the wagon wheels, but yes! The poet in me thinks that this trick of perception is very important.

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