Another Easy Illusion. the After Image.

Another easy illusion on paint, the after image.
this can be viewed on paint or powerpoint or some other
American slide show program.

go somewhere and get a pic that you want
as an after image.
simple pics work best

make a small white circle in the middle of the pic.
then invert the colours. (ctrl i)

save what you have done and the delete everything in the pic exept for dot.
then save that as something else.

if you have powerpoint or another slide show viewer make the inverted pic first slide then dot
the bext slide.
tell viewer to stare at dot for 20-30 sec then go next slide.
you should see normal pic.

On paint.
if you don't have a slide show viewer go to dot pic, press ctrl a then ctrl c.
then got to inverted pic and stare at dot for 20-30 sec then press ctrl v.
hope you enjoy