Buzz Blog has a post up about the physics of the Golden Gate Bridge. They mention the thermal effects, which I had blogged about this past summer. There is also now a demonstration of the vibrational modes, using a 1/500 scale model:
There’s also a puzzle at the Buzz Blog link
This quite possibly could be the best business card I have ever seen, because it is not just a cleverly designed graphic, it’s a puzzle: although the diameter of this circle on the card is smaller than that of a quarter, there is a way to get the quarter through the hole. It’s an enigma, get it? Can you figure it out?
There is a way of solving it which does not involve immersing the quarter in liquid nitrogen. (or any other thermal solution)