Another neat optical illusion
 

http://dogfeathers.com/java/spirals.html

Gave me a headache.

I guess these threads of mine get reposted on boards that have very little posts or traffic.

very matrix-y

cool :thumbsup

Oh My head!

I am forwarding it to my friend! I want their heads to ache :)

Damn that fucked with my eyes

Damn that fucked with my eyes

it's.....giving me a headache :(

i thought i was neo for a second :)

hehe i saw this at the calgary science station :)

Nice, that was crazy LOL

Nice, that was crazy LOL

Nice one, it looked the second image was growing.

That is pretty neat

That was cool!

very cool indeed

Great illusion! Very nice effect has when you look at the spiral about 30 seconds then look at your hand.. :D

Simply amazing... :thumbsup

ahhhhhhhhhhh.. my eyessssssssssss...

much more fun when you put the speed on 180, woo!

reminds of doing acid big time.. neat trick!

My eyes deceived me again... :(

nothing happened

didn't work for me, think i have to buy new eyes

Who needs acid when you got cool stuff like that? :1orglaugh

A way better optical illusion:

Optical Circular Wave

i put the speed on 80 and then reversed it and stared at it for 60 seconds. Afterwards I looked at the mirror... that shit is fuckin' awesome

Very nice.

thats cool :)

my eyes... it gives me a headache

ouch.... my eyes...I'm having a headache......:(

It took me 3 tries just to see it.

I tried it again, and held it for 60 seconds. My vision got blurry for about 5 minutes after. :(