These aren’t just your regular optical illusions where after looking at it differently you can tell what it really is. They are actual tricks of the light that make you see things in differen’t shades than they really are.
That is pretty cool, although I could’ve done without the soundtrack.
I’ve been looking at the checkerboard illusion, JfMen, but I don’t get it. It says the squares marked A and B are the same shade of grey. I’ve been studying the picture and I really don’t believe that is the case. Anyone else flumuxed by this? 
(sorry for hijacking the thread slightly, Sterra)
Copy the image into a paint program, then grab one of the areas and move it over the other. Very striking.
That is pretty amazing!
:eek:
If you’re too lazy to bring it to photoshop, then it’s explained here:
That is SO cool…but I HAVE to stop playing now and go do my homework…maybe I’ll just look at just ONE more…
These are very cool and the checkerboard one in particular reminds me of the late, great Gene Scarpantoni, my first wonderful art teacher. One of his mantras was “Black in the light is lighter than white in the shadow.” Some of the students had it put on a tee shirt for him.
I don’t think they’re “tricks of the light”, though, Sterra. I think they’re tricks of perception. Your brain is fooling your eyes because it believes light is involved when it isn’t. If that makes sense.
My favorite is the spinning pinwheel illusion found here http://www.dhodrien.pwp.blueyonder.co.uk/Illusions/illusions.html
Go near the bottom of the page, click the picture and download the zip file. Stare at the dot for a minute or two, then look at something else. It is the closest thing to a hallucinogen that doesn’t require you to take anything.