TYWKIWDBI ("Tai-Wiki-Widbee")

"Things You Wouldn't Know If We Didn't Blog Intermittently."

18 August 2008

The Fraser Illusion

The horizontal lines are parallel. Found in the Futility Closet.

No comments:

Post a Comment

View web version

About Me

Minnesotastan: I'm using an old photo of my grandfather as an avatar; he would have been amused. Readers - especially old friends, classmates, students, former colleagues, and long-lost relatives - are welcome to email me via retag4726 (at) mypacks.net

View my complete profile

Powered by Blogger.