My new favourite optical illusion.
- Thread starter T-Bone
- Start date
Tetsuo_Shima
In Cryo Sleep
I like it! I like it a lot. You can do the same sort of thing if you stare at a solid colour for 30 seconds and then look at a white wall. If the colour you stared at was blue, then you'll see a yellow square floating on the white wall. If it was red, then green. Yellow, then blue etc. etc. Probably if you load up any picture in a paint program, go 'invert colours', stare at it for 30 seconds and then look at a white wall/piece of paper you'll see the picture as it should be.
Marqo
In Cryo Sleep
Yup. Quite a strange effect, and quite funny. If I recall correctly, it's because when you are looking at a colour, your brain (relatively) slowly gets used to seeing that colour there. When suddenly, it's no longer there and replaced with white/grey, your brain records that as being the opposite colour in the spectrum, until your eyes adjust again.
Iirc, the cones that see that particular color gets depleted when you look at an image for a while, and then, when the black and white image is viewed, only the cones of the negative (of that negative you just saw, i.e. the positive) can fire, instead of all of them - usually all different cones fire and sort of cancel each other out - , producing the positive image instead. I'm sure there are some factual faults in this explanation, on the cellular physiology level, but it's broadly true 
