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Optical Illusions​

We have all seen them - things that on paper look real, but in reality, cannot exist ... can they?

I'll start off by posting one I found - feel free to add anything at all that counts as an Optical Illusion.

 

[Ian D]

A polar bear in a snow storm.
A photo of a white wall.
Shit i have gone blind.
A clean white tile in the bathroom.

 

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Are the Lines Parallel?

Are the horizontal lines parallel, or do they slope? Reveal Answer Believe it or not, they are parallel!

kids.niehs.nih.gov

Click on the link to be taken to the page.

 

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The Best Optical Illusions and What They Reveal About Our Brains

8 mind-bending optical illusions and a brief explanation of how they work as well as what they reveal about perception and our brains.

visme.co

An interesting TED talk on light and interpretation of images.

Once on the site, scroll down a bit for the video.

 

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“Stepping feet” Motion Illusion

Demonstration of ‘Stepping feet’

michaelbach.de

The understand this one, look on the right hand side outside the striped box.
DE-SELECT the "High Contrast" box.
Read the explanation to see that the stripes generate the illusion.
Change colours also to compare effect.
Try also increasing the number of bars

 

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Motion Aftereffect (Waterfall Illusion)

Demonstration of the Motion Aftereffect (Waterfall Illusion)

michaelbach.de

This one is self explanatory

 

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Enjoy!