Think – Today: How Long Did It Take To Build The Empire State Building?
Think first, then research, then THINK again. Think for the pleasure of thinking.
Yesterday’s ‘Think’: “How we see color” — Couple of things to factor in to appreciate how scientists were finally able to work out that it is the rods and cones in the retina of an eye that gives us, or any other animal, the ability to see color (as well as black and white). The first thing to remember is that concerted scientific research into the working of the eye had been going on for 150 years before they were finally able to make this vital breakthrough. Second, they used the eyes from a large variety of animals to help them figure out what was taking place. They actually discovered the ‘seeing’ properties of cones and rods when a Japanese neurophysiologist, in 1964, managed to insert an electronic sensor/probe into the cone of an eye from a fish! This article from the ‘Harvard Medical School‘ will explain it much better.