© Bob Kisken
Science Education
Introducing Bob Kisken
Bob Kisken was recently introduced to me through my friend Tod Swormstedt of the National Sign Museum in Cinncinati. Bob says:
I was born in Tarrytown NY. Taught public school inAnn Arbor for about 25 years. Have had exhibits in
Iowa, SD, Nebraska, Pa, Wyoming and now in Finland. On
my travels I saw a ghost sign and started shooting
them a year ago. I now live in Glenrock, Wyoming.
Here are some of his favorites.
Optical Illusion
If your eyes follow the movement of the rotating pink dot, the dots will remain only one color, pink.
However if you stare at the black “+” in the center, the moving dot turns to green.
Now, concentrate on the black “+” in the center of the picture.
After a short period, all the pink dots will slowly disappear, and you will only see only a single green dot rotating.
It’s amazing how our brain works. There really is no green dot, and the pink ones really don’t disappear.
This should be proof enough, we don’t always see what we think we see!
Thanks Erik!
