ONE CRAYON, TWO COLORS? - a demonstration of the Munker-White Illusion

That is cool. What if you extended the blue line from between the blacks over to in line with the blacks? Got to try this.

Wow!! How could this be applied to clothing/fashion? It’s super cool! I LOVE your channel so much! You have no idea.

I've already known about this but i've never seen a much better representation of it until now

Nice demonstration. I had not seen that atlas at the end before.

Everyday you are helping me explain my painting to people. Thanks for the video.

Interesting! But what do you mean by "pushing against the black"?

This is what Sir Ernst Gombrich called "the Spreading Effect." it's why type in a book looks gray, while it's actually black. The white page seems to "spread" over the black type.

My brain perceived the colors the same until you finished the right side. I actively noticed my perceptions shift from the same color to different colors.

I think there will be at least 3 simultaneous effects:
1.
White spreads because it does reflect light while black does the opposite.
If you draw a black line on a white paper and then take a strong lamp and point it directly onto the line you can see that the line becomes white or having white fissures along its edges.
Usual black can only absorb a certain proportion of light so it gets outshined at some point. (And don't forget there is still a white layer beyond the black. But this is too much quantum stuff...)
2.
High contrasts create the illusion of depth.
Brains are trained to estimate the depth of a room by its contrasts influenced by light.
The color block to the left will be usually interpreted as behind something and the black lines, respectively the object of higher contrast closer to you e.g. when looking outside through a window with a louvre (perspective from the internal system (window) to an external system (environment e.g. sun).
The opposite is also true where objects of higher contrast and dimmer color are interpreted as far away e.g. when you are in the same system (dark corners in the room respectively "shadows"). This effect has also an opposite of the opposite and exceptions but this going too far...
Looking onto the right side the color block is violating the rule of depth independently from the presence of the left color block. The black lines become interrupted by another color, but progressing with black meaning there must be a gap due to damage etc. This is why it may feel displaced.
3.
The bright color illusion?
It's similar to the illusion of depth. Brighter colors are interpreted to be closer to you than dark tones. This is also physics and perceived correctly as well because brighter colors usually tend to be closer to the source of energy e.g. the sun. Anything else would be partly absorbed by the atmosphere etc thus looking dimmer. However on the bright and two dimensional sheets of paper e.g. it becomes an illusion.
Back to the brighter block on the right side you see black, white, and blue or pink. Its two bright systems and one dark. Each color is brighter than black, so the result will be mostly the same but stronger when using brighter tones, because they inherit or reflect more energy.
Because the usual pattern seems to be black lines followed by white space the colored source cannot be perceived as something usual especially when it is replacing the dark tone (black line). It feels displaced and these segments must be closer to you. The white space is increasing this effect. And bright color + bright white must be closer and the color brighter than the black lined contrast.
4.
The wrong assumption
So illusions are mostly created by wrong assumptions of behaviour experienced in 3 dimensional space. These rules don't be necessarily always true, especially within areas we couldn't usually experience. We have no natural understanding of different wavelengths, especially within the nanoscale these translated to 2 dimensional items. Moreover human perception is also limited. Its more limited than we think it is. Just have a look onto the EM-Spectrum. It may be just 3% of it we can perceive or understand...
The brain needs to extrapolate the bright tones away from to the black toned lines to make the most sense respectively some kind of shape of it. Doing so it's deciding to mix the bright colors together to a brighter average colored metastated and shaped block. If you look from far away you will always see a unicolored block instead of randomly colored lines. So the shape is also an extrapolation of the sum of everything.