«
»

Optical illusions

January 5th, 2007

Davina Bristow has a few nice optical illusions in this Telegraph article.

Here’s one.

optical illusion

The faces of this cube are, in fact, the same colour. Davina suggests a way to confirm this by cutting holes in a bit of paper which hides the surroundings – on my Mac I used the Digital Color Meter utility which shows the top actually to be slightly lighter in this rendition. It’s the edges of the faces, and the appearance of a shadow, which causes us to deduce that the top is grey and the bottom white.

Thanks to Claes-Frederik for the link.

Enjoyed this post? Why not sign up to receive Status-Q in your inbox?

Possibly-related posts:

1 Comment

To confirm this one, I just put one finger horizontally to cover the joint between the two surfaces, and another to cover the left edge and squint, preferably with only one eye, and I see one very uniform shade of gray.

Got Something To Say:

Your email address will not be published. Required fields are marked *

To create code blocks or other preformatted text, indent by four spaces:

    This will be displayed in a monospaced font. The first four 
    spaces will be stripped off, but all other whitespace
    will be preserved.
    
    Markdown is turned off in code blocks:
     [This is not a link](http://example.com)

To create not a block, but an inline code span, use backticks: 

Here is some inline `code`.

For more help see http://daringfireball.net/projects/markdown/syntax

*

«
»

Feeds

RSS  RSS feed

Categories

January 2007
M T W T F S S
1234567
891011121314
15161718192021
22232425262728
293031  

© Copyright Quentin Stafford-Fraser