The Good, the Bad, and the Eyeless
Saturday, February 16th, 2008
In my last post I described how we measure visual acuity in people. That got me wondering how well human eyesight measures up in the context of the animal kingdom. Here’s what I found out:
The Good
Birds of Prey, such as Hawks and Falcons are believed to have an acuity of around 20/2, which is about [...]
Eyeglasses 101
Saturday, February 16th, 2008During his eye exam last week, the Optometrist told my son that his new prescription would correct his vision to better than 20/20. Today when we picked up his new glasses he asked me exactly what that meant. As with many of the questions my kids routinely ask me, I thought it better to research [...]
Great Science Magazines for Kids
Thursday, February 14th, 2008If you are stuck for gift ideas for the science minded youngster, consider giving him or her a subscription to one of these great science magazines for kids. After receiving a sample subscription to Kids Discover Magazine, I bought my son a one year subscription and he loves it!
I will keep this site updated with [...]
Color me smart: 5 reasons why things are the color that they are
Tuesday, February 12th, 20081. Why is the sky blue?
A. A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colors because the blue light has been scattered out and away from [...]
