Come on .... doubt if its illusion .... Its just made that way i guess.... Whts the explaination ....
no illusion ... it is just hysterisis of retina ... but then it can be termed as illusion coz u are seeing something that aint there ....
@nanda ....i cant belive that ....i mean the illusion got you so much that you belive its actually true. If you have a gif Animator...you can create a similar one ....and check it out @ssslayer ......even and hysteria is an illusion