Optical Illusions 29 - 35

The diagonal lines are actually parallel.

gray spots illusion

Believe it or not, there are no
gray spots at the corners of the squares.

red square illusion

The red squares are the same color
in the top and bottom of the "X".

parallel lines illusion

Parallel lines at sunrise.

wavy squares illusion

Wavy Squares? No!
The background of concentric circles
makes the squares appear distorted.

warped square illusion

Warped Square?
No, there are no curved lines in this figure.

three prong fork illusion

Three prong fork?

And thanks to Michael Sibbernsen, one of the Kids Pages' visitors, you can
learn how to draw the "Devil's Fork" illusion yourself.

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Links Disclaimer and Caution

When you encounter this image link to a non-NIEHS site

or the words "Non-NIEHS Link", it means that by following that link you will be leaving the NIEHS website. NIEHS is NOT responsible for non-NIEHS websites. Sites maintained by outside organizations may be changed without notice to NIEHS. Therefore, unless the link is to another U.S. government sponsored webpage, endorsement by NIEHS is not implied, and NIEHS does not guarantee their continuing safe content or privacy policies. So please ask your parent or guardian before continuing to any non-NIEHS website, and especially before providing any information via the internet or by e-mail. When last reviewed, the websites linked from the NIEHS Kids' Pages seemed suitable for you to visit, but that may have changed; if you have any difficulties or concerns with any linked materials, please let us know.