On drums...

We've talked about the relativity of sound. This visually illustrates the issue in a remarkable way. And a good illustration why we are convinced of a particular version of truth while unable to see the truth.

http://www.mantlelabs.com/illusion/

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Gregory

, Unbelievable.

My wife used to work for a company that made picture frames. They used several different (profile) stained timber mouldings, with a subtle color in the grooving of the moulds. This color had a green appearance when used with Landscapes, Blue when used with water, and Red when used with Autumn/Fall colored pictures, the color on the moulding itself was always the same, amazing how it can appear different depending on its surroundings, Amazing thing the mind.

Cheers

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Jeff
Gots ta luv da Beech
Australia