After an awesome day at the
Detroit Science Center we stopped at Borders and I picked up two books,
Light Years by Brian Clegg and
Quantum Physics by Alastair I. M. Rae.
Light Years
"looks over the shoulders of the great revolutionaries of light theory--Bacon, Galileo, Newton, Faraday, Maxwell and Feynman--and traces the evolution of light-driven devices from the camera to the laser...author Brian Clegg reveals how twenty-first century scientists have achieved the seemingly impossible in bringing light to a halt, and used the quantum properties of entangled light to produce unbreakable encryption and unbelievable computers." The book includes the optical illusion below and I am still BAFFLED by it. The shades of gray in tile A and tile B are the
exact same. How is it possible that my mind sees two shades of gray when it's the same color? I even cut out the tiles in Photoshop to try to prove the illusion wrong but they're the same color. HOW?

There's more information on this illusion
here.
( I did have time to watch the season finale of Torchwood this morning )A colleague lent me the Dr. Who s3 DVDs which I think I'm going to try out. I borrowed them primarily for the purpose of watching the Jack episodes but, if I like the show, I'll stick with it for season four. I tried watching in s1 and quit because it was a bit too campy for my tastes. Perhaps, now that I fell for the universe as a whole, I'll feel differently.