Back by popular demand (and because our web metrics indicate that our readers love these illusions), we have another 8 of the best optical illusions to trick your brain.

First, the Spinning Spiral… which is a static jpeg and there’s no animation taking place, but if you move your eyes to look in any direction or blink, then the spiral spins.

spinning wheel illusion

This is a picture taken directly above many camels walking in the desert at sunset. Look, closely, because the camels are actually the white lines in the image. The “silhouettes” you are seeing are actually the camel’s shadows.

camel shadow illusion

The image below it is similar, only with zebras instead.

zebra shadow illusion

The green and the blue in the spiral below are the same color…

color trick green blue illusion

It is believed that the reason why we are perceiving one color as two different colors is because of the other colors surrounding the stripes. Each eye has six to seven million cones, which are concentrated in a central yellow spot known as the macula. These cones measure color in different wavelengths, where some of which overlap. Our brain then compares by measuring the differences in wavelengths between the colors. When certain colors are combined, the brain can’t process the data from the cones correctly and we get confused. [gsu and Techi]

The QR Code Illusion… sort of. It’s not a QR code, but look at at the “shimmering” in this image:

qr code illusion

The two orange circles are exactly the same size; however, the one on the left seems smaller. This is known as the Ebbinghaus Illusion.

Ebbinghaus illusion

Two straight and parallel lines look as if they were bowed outwards – known as the Hering Illusion:

hering illusion

And at last, the following image represents a pattern of squares, but there appears to be a spherical bulge coming out of the centre of the image:

squares and bulge illusion

Do you know of any other optical illusions that should have made this list?

References:
http://en.wikipedia.org/wiki/Delboeuf_illusion
http://en.wikipedia.org/wiki/Ebbinghaus_illusion
http://en.wikipedia.org/wiki/Hering_illusion
http://www.livescience.com/4950-key-optical-illusions-discovered.html


  • Anonymous

    Sorry, but the spiral where you claim they are the same color is not real. I took a screenshot and opened it in a paint program. I took a color extraction of the green (it was green) and I took an extraction of the blue (the palette changed to blue.) They are definitely not identical colors when isolated from the image, although they do look a bit different in the spiral from the extracted colors, once you can look without the other colors interfering. Perhaps something was lost in translation?

  • Anonymous

    Got the same result for the blue and green colours… they are not the same at all.

  • xBelieveInEve

    >thats cool but the blue & green colors…are not the same :b

  • Anonymous

    the blue and green colors actually are the same, if you zoom right into the image, you will notice that the purple lines running over the "blue" line have a blue outline, but the orange lines which run over the green line do not have any outline.
    So I think its safe to say the blue outline on the purple is what makes the second green line appear blue. 🙂

  • Pingback: 23 Optical Illusions That Will Destroy Your Sense Of Reality | Sharing Interesting Stuff, Updates News & Free Tips()

  • Pingback: Jeobox – 23 Optical Illusions That Will Destroy Your Sense Of Reality()