Physics Help Forum Newton's Experiment
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 Periodic and Circular Motion Periodic and Circular Motion Physics Help Forum

 Mar 24th 2016, 12:42 PM #1 Junior Member   Join Date: Mar 2016 Location: KOLKATA Posts: 1 Newton's Experiment To divide the white colour in to its seven constitute colour i.e. VIBGYOR just rotate a disc on pivoted point and throw a white light and while it is rotating with the white light on it you will notice there is seven colour on the disc and while the disc is stop the colour of the will again become white.
 Mar 24th 2016, 12:57 PM #2 Forum Admin     Join Date: Apr 2008 Location: On the dance floor, baby! Posts: 2,163 Is there a question here? -Dan __________________ Do not meddle in the affairs of dragons for you are crunchy and taste good with ketchup. See the forum rules here.
 Mar 29th 2016, 02:41 PM #3 Senior Member     Join Date: Apr 2008 Location: Bedford, England Posts: 668 From the phrasing of your post, I an assuming that English is not your native language. It is a bit difficult to be clear if the problem is with your English translation or with your understanding of the experiment. You seem to be indicating that there will be seven colours seen when the disc is rotating, but it looks white when it is stopped, this is not correct. What you describe is actually exactly the reverse of what would be seen! The experiment is that the colours are all visible when the disc is still, but the colours all blur together when the disc is rotated (because the brain cannot process the changing colours quickly enough) giving the illusion that the disc is completely white. This is one of several experiments that show that what we see as white is actually a mix of all colours. The other classic Newton experiment that shows this is shining white light through a prism. Note that where I have used the word "see", a better word would be "perceive", Because English is not your native language, I used "see" as a simpler English word which is almost correct. Hopefully If you can find a good translation of these two words you will understand the difference. "see" is what our eyes do, "perceive" is what our brain does with the information our eyes give it. __________________ You have GOT to Laugh !

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