NTNUJAVA Virtual Physics Laboratory
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Knowledge and practice are one. ..."Wang Yang Ming (1472-1529, Chinese Philosopher) "
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Author Topic: illusion: The same color illusion  (Read 8388 times)
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Fu-Kwun Hwang
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on: January 03, 2011, 12:26:48 pm » posted from:Taipei,T'ai-pei,Taiwan

http://en.wikipedia.org/wiki/Same_color_illusion
The same color illusion—also known as Adelson's checker shadow illusion, checker shadow illusion and checker shadow—is an optical illusion published by Edward H. Adelson, Professor of Vision Science at MIT in 1995. The image depicts a checkerboard with light and dark squares. The optical illusion is that the area of the image labelled A appears to be a darker color than the area of the image labelled B. However, they are actually exactly the same color.

You can drag the bar at the left and move on top of A and B (or click auto checkbox).
You can also drag the slider to change the color of the bar.

You can hide other blocks if you drag the second slider to highest value.

Those two orange dots are the same color. try to drag one of them to block A, another to block B.
Are they look the same color after being moved?
Enjoy the fun of illusion! Trick your mind! Grin

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lookang
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Reply #1 on: January 03, 2011, 01:54:46 pm » posted from:SINGAPORE,SINGAPORE,SINGAPORE

amazing!
i still see the difference in color between A and B despite the use of a single color at 124 to illustrate that the color is the same.

my eyes and mind are playing tricks on me.

thanks for the new applet!
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Fu-Kwun Hwang
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Reply #2 on: January 03, 2011, 09:24:03 pm » posted from:Taipei,T'ai-pei,Taiwan

Click the auto check box.
Did you find the boundary of of two bars with A/B block?
Look at them separately. Did you find diffent color between those two bars and block A/B?

You might think those two blocks are different color if you look at them at the same time.

I just modified the code, you can drag the second slider to hide other blocks,
  and check out if there are the same color.
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Reply #3 on: April 12, 2011, 09:36:25 am » posted from:Qingdao,Shandong,China

I have a friend who is falling in love. She honestly claims the sky is bluer. Mozart moves her to tears. -*-
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Knowledge and practice are one. ..."Wang Yang Ming (1472-1529, Chinese Philosopher) "
 
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