Shortcuts
 
Sitemap Sitemap
Comment Contact
Newsletter Newsletter
Store Store
Books
Syndication Features
Gallery Gallery
E-cards
E-cards
Games Games

eureka!!!
corner

Related links

Puzzles workshops and optical illusion exhibitions for schools & museums.

Optical illusions for the media, editors & publishers.

Optical illusions, just optical illusions...



corner top left

Previous optical Illusion of the Month (October-November 2009)

 
by Gianni A. Sarcone and Marie-Jo Waeber
 

 

arrow back Back to Monthly Optical Illusion | Home arrow home

'What's wrong with this picture' challenge

Pointing fingers
On your opinion, which forefinger points EXACTLY to the middle of the shape’s height: A or B? Please, explain what influenced your choice!

pointing fingers
[Enlarge]
Solution

Strangely enough, 80% of people is convinced that both fingers point at the same level (although the one on the right appears to be lower). Actually, only finger B points to middle of the shape's height, as demonstrated in the figure below.

monthly optical illusion solution

You're encouraged to expand and/or improve this article. Send your comments, feedback or suggestions to Gianni A. Sarcone. Thanks!
You can use the image(s) above in your non-commercial web page for free as long as you leave the copyright and author's info intact and link to us.


arrow back Back to Monthly Optical Illusion | Home arrow home
giflet Recommend this page 

 

 
transparent gif
recommend Suggest this page to a friend | facebook Follow us on Facebook | comment Report any error, misspelling or dead link
Archimedes' Lab | How to contact us | italian flag Come contattarci | francais flag Comment nous contacter
line
About Us | Sponsorship | Press-clippings | Cont@ct | ©opyrights | Tell-a-friend | Link2us | Sitemap
© Archimedes' Lab | Privacy & Terms | The web's best resource for puzzling and mental activities
spacer spacer corner right bottom