Optical Illusions
https://tinyurl.com/lelwng9 Remember the first time you saw this? You saw what you saw. Then, someone said she saw something else. Really? Yes, really. Hmmmmmmm..... I worked in the Reading Lab today with a young man who zipped through the assignment in record time. We looked on the bookshelves for inspiration. The O Volume of the encyclopedia was of marginal interest (notwithstanding the orangutan and the optical light telescope). The Book of Minerals made for interesting reading (aloud, by me, which was hardly the point of our time together) and picture gazing and a semi-scientific explanation of prisms. The Science Explained book brought it all together in the section on optical illusions. He'd never seen the Rubin Vase before. Ours were blue and gold, but he saw the faces and I saw the vase and neither of us were quite able to see what the other saw. It got better. brucepurdy.com There was a ruler in the cadd...