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Old 12-06-2014, 08:09 PM #1
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Default Mysterious Optical Illusion - What colours can you see?



Quote:
  • Illusion named Benham's top after Essex-born toymaker Charles Benham
  • Some people see green, a few yellow or red and other see no colour at all
  • Exactly why illusion looks different to different people is still a mystery
  • Benham's top is being researched for use as a tool to identify eye disease


Stare at this black and white wheel long enough and you may see a colour appear out of nowhere.

But incredibly, different people see different colours - and some may not see anything at all.

Many people say they see green, others see yellow and a few see red, but exactly why this is the case has baffled scientists for decades.

The wheel is called Benham's top and it creates an illusion of colour when black and white patterns rapidly change, as reported by Casey Chan on Sploid.

It is named after the Essex-born toymaker Charles Benham, who, in 1895, created a top painted with the pattern shown.

When the wheel is spun, arcs of subtle colour, called Fechner colours, are visible at different areas on the surface.
I'm colour blind I can only see black and white :{}
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Old 12-06-2014, 08:11 PM #2
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I'm not colour blind but I only see black and white
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Old 12-06-2014, 08:12 PM #3
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I don't see any colour either apart from black and white. I looked at it for about a minute, can't be arsed with anymore.
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Old 12-06-2014, 08:13 PM #4
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I just had a fit.
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Old 12-06-2014, 08:14 PM #5
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Black, White, Blue and Green.

Colour blind doesn't mean you can only see b&w btw
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Old 12-06-2014, 08:15 PM #6
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Yellow...
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Old 12-06-2014, 08:15 PM #7
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Quote:
Originally Posted by Josy View Post
Black, White, Blue and Green.

Colour blind doesn't mean you can only see b&w btw
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Old 12-06-2014, 08:17 PM #8
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I just had a fit.
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Old 12-06-2014, 08:17 PM #9
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Quote:
Originally Posted by Josy View Post
Black, White, Blue and Green.

Colour blind doesn't mean you can only see b&w btw
umm are you colour blind josy
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Old 12-06-2014, 08:22 PM #10
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I only saw black and white
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Old 12-06-2014, 08:29 PM #11
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black white and yellow/green
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Old 12-06-2014, 08:32 PM #12
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I used to have a toy of this! I see red atm
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Old 12-06-2014, 08:33 PM #13
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It gave me a headache.
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Old 12-06-2014, 08:43 PM #14
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only black and white.
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Old 12-06-2014, 08:58 PM #15
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the centre goes grey-ish for me with a purple ring
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Old 13-06-2014, 12:15 AM #16
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Quote:
Originally Posted by Jarrod View Post
Yellow...
Same, do you have good eyesight?
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Old 13-06-2014, 12:17 AM #17
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Is that what it is? I need glasses and didn't wear them.
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Old 13-06-2014, 12:18 AM #18
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Black, White, Yellow & a bit of red/orange
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Old 13-06-2014, 12:25 AM #19
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watched for ages and the lines inbetween started flashing between yellow, green and red
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Old 13-06-2014, 12:44 AM #20
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Slight tinge of red in the middle.
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Old 13-06-2014, 12:45 AM #21
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only red
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