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Participant

Join Date: Jan 2010
Posts: 1

magic colours

01/02/2010 11:07 PM

make out a circle.colour one side red and the other blue.punch small holes on opposite sides of the disk,and thread short lengths of string through each hole.hold the cardboard by its strings and twirl it around.what colour do you see now?

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Guru

Join Date: Jul 2007
Posts: 4448
Good Answers: 143
#1

Re: magic colours

01/03/2010 8:49 AM

Neat experiment. You can also do LEDs on 12" wires. Then twirl them.

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#2

Re: magic colours

01/04/2010 2:19 PM

I saw the red side still red and the green side remains green as well.

So I coloured the outer side red and the inner side green, but the colors remain unchanged.

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