Optical Teasers: Sink Back And Solve Away!

by Al Seckel

Each optical teaser in this challenging book is a small diagram that, when stared at or moved in a certain way, tricks the eyes. Brief directions show readers how to experience the teaser. Some of these "directions" ask a question intended to make the viewer do something. The answer to the question is determined by viewing the teaser and is also printed in upside-down text at the bottom of the page. The teasers are very easy to perform but are interesting enough to merit repeated viewings. Includes over 80 puzzles.

96 pages, Paperback

First published July 1, 2004

Reviews

[tony dillard jr · Rating 3 out of 5]

This collection of optical illusions and visual puzzles is comprised of some classics (like the Duck/Rabbit) and some I've never seen before (like a negative spaced image of Christ.) It was a fun read that boasted solutions to brain teasers such as which line is longer.

Author Al Seckel is considered a leading expert in visual and sensory illusions. But I wish that the author would've spent a little more time explaining why things were as they seem. One type of illusion I absolutely hate involves if one area of a picture is lighter or darker than another. The answer is almost always that thewy are the same color. Yet I just can't see it. It's tricks of the eye like that that I wish our resident expert on the field explained why I couldn't see the effects he describes.

Trippy stuff that needs more to make it a truly enjoyable read.