It’s easy to look at history and judge the ignorance of past generations. We know that the earth is not flat (well, most of us do). We know that flying machines are possible. We know many things people didn’t know back in the day. But what do we not know today? Who are our eccentric geniuses? And perhaps, most importantly, are we treating them any better?
Originally published on Green Building Elements. Thanks to John Perlin for providing GBE with this intro to his book on the history of solar energy. We published information about this book on October 4, concluding that we would provide an introduction from Perlin today for the book. I believe anybody who is interested … [continued]
Humans have dreamed of flying from before the time of Leonardo da Vinci. Secrets have been revealed. The first video is awe-inspiring and the second is sure to make you laugh.
[Note: You should definitely watch the video below and see the very natural-looking way the wings of this flying machine flap.] Ornithopters (from the Greek words ornithos “bird” and pteron “wing”) have a long history. They are basically machines or aircrafts that fly by “flapping their wings.” Leonardo da Vinci was a … [continued]
