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USALiberal

(10,877 posts) Sat Jan 26, 2019, 12:36 PM Jan 2019

Silly, but two of my favorite optical illusions

The A and B squares are the exact same color!!

These tables are the exact same size

8 replies

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Silly, but two of my favorite optical illusions (Original Post) USALiberal Jan 2019 OP

Don't get the first one underpants Jan 2019 #1

They are the exact same color, that is the illusion. The shadow is causing the effect. nt USALiberal Jan 2019 #2

Same size and shape? Beakybird Jan 2019 #3

Yes USALiberal Jan 2019 #4

I love it. Evidence that we see with our brains and not our eyes Ron Obvious Jan 2019 #5

I also edited it with an app to test it. Neat effect. nt USALiberal Jan 2019 #7

... Donkees Jan 2019 #6

Good proof!! nt USALiberal Jan 2019 #8

underpants

(182,829 posts)

1. Don't get the first one

Reply to USALiberal (Original post)

Sat Jan 26, 2019, 12:39 PM

Jan 2019

The checkerboard pattern would make them different colors

USALiberal

(10,877 posts)

2. They are the exact same color, that is the illusion. The shadow is causing the effect. nt

Reply to underpants (Reply #1)

Sat Jan 26, 2019, 12:45 PM

Jan 2019

Beakybird

(3,333 posts)

3. Same size and shape?

Reply to USALiberal (Original post)

Sat Jan 26, 2019, 01:04 PM

Jan 2019

USALiberal

(10,877 posts)

4. Yes

Reply to Beakybird (Reply #3)

Sat Jan 26, 2019, 01:06 PM

Jan 2019

Ron Obvious

(6,261 posts)

5. I love it. Evidence that we see with our brains and not our eyes

Reply to USALiberal (Original post)

Sat Jan 26, 2019, 03:54 PM

Jan 2019

Our brain composes the image based on input from the eyes and then error corrects for how it thinks it "ought" to look, which is why we're fooled.

At one point I had the first image as my avatar here. I simply cannot force myself to see the two squares as the same colour, even though I used an RGB picker to verify that they were indeed the same colour.