Perceptual Illusions
nautil.us
Perceptual Illusions
1–10 of 26 posts
Re: Perceptual Illusions
#2Those are particularly good examples of optical illusions. Normally these sort of articles are disappointing, but I'd not seen many of those before. Very tempted to order one of those mugs.
Re: Perceptual Illusions
#3Sometimes I feel like my perception of life even can be altered. For example, positive thinking can change a lot but you live same reality. (Other examples like gratitude)
Re: Perceptual Illusions
#4Those are particularly good examples of optical illusions. Normally these sort of articles are disappointing, but I'd not seen many of those before. Very tempted to order one of those mugs.
LOL, that mug may win "best illusion of 2018" but definitely would also win "things not to bring to the office in 2018"
Re: Perceptual Illusions
#5I've often described colour blindness as an optical illusion, and that confetti illusion is exactly what I have in mind. Peanut better has a green lid and green label which makes the slightly ambiguous brown look green. Or the walk symbol at a cross walk - usually a light is white so I just assume that walk symbol is also white (even though I now know it's green). Or the statue of liberty - it's a big rock so I assume grey, even though I know it's green. However when any of these are looked at in isolation, it's clear what their correct colours are.
Re: Perceptual Illusions
#6I've often described colour blindness as an optical illusion, and that confetti illusion is exactly what I have in mind. Peanut better has a green lid and green label which makes the slightly ambiguous brown look green. Or the walk symbol at a cross walk - usually a light is white so I just assume that walk symbol is also white (even though I now know it's green). Or the statue of liberty - it's a big rock so I assum…
So, the statue of liberty isn't made of rock, it's made of Bronze, the Copper oxidised (amongst other things) eventually leaving it a bluey-green: https://www.iflscience.com/chemistry/the-true-color-of-the-s...
Re: Perceptual Illusions
#7Studying electrical engineering I've learned an important concept: Everything is relative. Ex: to measure the voltage, we need a reference to measure it against. I think the brain works very much the same way. Every perception of reality is processed with respect to some reference.
Re: Perceptual Illusions
#8These are great and many were new to me.
Instead of #6, the one involving moving the square from the light to dark side, I prefer the static Checker Shadow illusion[1], using the same priciple. The problem with involving electronics in it is that there always is suspicion that the machine is playing the trick instead of just your visual system.
Re: Perceptual Illusions
#9I've often described colour blindness as an optical illusion, and that confetti illusion is exactly what I have in mind. Peanut better has a green lid and green label which makes the slightly ambiguous brown look green. Or the walk symbol at a cross walk - usually a light is white so I just assume that walk symbol is also white (even though I now know it's green). Or the statue of liberty - it's a big rock so I assum…
Depending on the lighted walk symbol, it may be white. I think most in the US are but some localities vary.
Re: Perceptual Illusions
#10These are awesome! I studied cognitive psych and psychobiology at UVA in the mid 90's, and my favorite class was a seminar on perception. Illusions are a great tool for learning how our visual system works. Also, they're really cool.