This page uses JavaScript.
Please enable it or upgrade
your browser. Thanks!

<table width="139" border="0" align="center" cellpadding="4" cellspacing="1"> <tr> <td align="left" valign="top"><font size="1" face="Verdana, Arial, Helvetica, sans-serif">We are sorry but your browser doesn't support the IFRAME menu. To navigate through our site please use our <a href="http://www.archimedes-lab.org/sitemap2.html" target="_self"><strong>sitemap</strong></a>.</font></td> </tr> </table>

Shortcuts

SiteMap

Shop

Books

Print Syndication

Galleries

A'Journal

E-cards

Games

N'Letter

E-mail

Big Book of Optical Illusions, ISBN 0764135201

New Optical Illusions, ISBN 1844423271

Fantastic Optical Illusions, ISBN 1844423271

Dazzling Optical Illusions, ISBN 0806983930

Shadow Illusions

by Gianni A. Sarcone and Marie-Jo Waeber

"Tutte le ombre parlano del sole,
sottovoce "

Emanuel Carnevali

Cast shadow influence on depth perception

A ball in motion - sliding diagonally across a table top - appears rolling, rising in the air, or bouncing, depending on the relative position of its shadow (although the original path of the ball remains unchanged!)

Original animation	Rolling marble
Floating bubble	Bouncing rubber ball

Strange triacontadohedrons
The green cylinder is placed on top or inside the polyhedron?
(see also kickboxer illusion)

	Concave?
Solid?
	Hollow?

Discovering the Shadow

"La scoperta dell'ombra" written by Roberto Casati
is an excellent book about shadows... We recommend it!

MORE OPTICAL ILLUSIONS?

Read here before
copying and using
any of our images
or texts. Thanks

Shadow illusions
A question, a suggestion?

Recommend this page

Share ideas and
discoveries with
other puzzle fans
contact us

Please report any error, misspelling or dead link. Thanks!

Archimedes' Lab, P.O.Box 1700, 16100 Genova Centro,

Italy | contact@archimedes-lab.org