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by the greeks in their temples
Optical illusions were first used by the Greeks. They built their temples so that the roof was slanted. This gave the illusion that the temple was actually standing straight. They also made the columns bulge so that from a distance they would look perfectly proportioned. In the course of history, people have encountered illusions in many ways. Many of these illusions appear in very common, everyday experiences.
1899 1899
They were first used in 1794. by Brady Hoop
There are several reports of the optical illusion being discovered by several people. The optical illusion was first noted by Aristotle. History also states Galileo Galilei, and American psychologist Joseph Jastrow also discovered the optical illusions.
This optical illusion was created by web designer Nabuyuki Kayahara in 2003. Which company displayed this illusion which is also called Right Brain vs. the Left Brain challenge is not clear.
1446 i Don't know if this is the truth
At first when the eyes will see only what they can see, but then then the brain will make the eyes see what there looking for.
it orginated from greece by a guy named Plato and another named aristotle.
Well, optical illusions help exercise your brain when ever you look at anything, but if you look at too many optical illusions it can really hurt you.
it is an optical illusion consisting of lines and arrows, a larger version of <-->--< where the dashes should be joined. The idea is that the distance between the first and middle arrows above looks shorter than the middle and third arrow. For a larger Muller-Lyre see www.csus.edu/.../psyc103/MullerLyre.jpg
Like if you have already performed several times, you still act like it is your first time, with illusion.