The Cool Science Stuff Thread

Property of Rarest Element on Earth Measured for 1st Time

A fundamental property of the rarest element on Earth, astatine, has been discovered for the first time, scientists say.

Astatine occurs naturally; however, scientists estimate much less than an ounce in total exists worldwide. For a long time, the characteristics of this elusive element were a mystery, but physicists at the CERN physics laboratory in Switzerland have now measured its ionization potential — the amount of energy needed to remove one electron from an atom of astatine, turning it into an ion or a charged particle.
 
This map of Pangea is truly stunning. It shows the once upon a time single land-mass with modern national borders.

For me, the most striking thing is that India and Tibet are nowhere near China. They're tucked in next to Antarctica, in between East Africa, the Arabian Peninsula and Australia.

https://plus.google.com/+BuzzFeed/posts/FGAh9ZHcXDe

You'll see more details if you click on the map and use the scroll wheel to zoom in.
 
Someone please explain the physics of this to me. I'm just not getting it.

Wind-powered Blackbird vehicle up for sale after rewriting physics

Rick Cavallaro has been called an idiot more times than he cares to remember. After posing the theory that a wind-powered vehicle can travel downwind faster than the wind, negating centuries of scientific belief, the Internet and its readers pointed, laughed and ridiculed the mad scientist. But on July 3, 2010, Cavarallo and his cronies silenced the doubters by constructing a wind-powered vehicle that travelled close to three times faster than the wind itself.
 
He is a wizard. It's the only reasonable explanation really, old sport.
 
Someone please explain the physics of this to me. I'm just not getting it.

Wind-powered Blackbird vehicle up for sale after rewriting physics

Rick Cavallaro has been called an idiot more times than he cares to remember. After posing the theory that a wind-powered vehicle can travel downwind faster than the wind, negating centuries of scientific belief, the Internet and its readers pointed, laughed and ridiculed the mad scientist. But on July 3, 2010, Cavarallo and his cronies silenced the doubters by constructing a wind-powered vehicle that travelled close to three times faster than the wind itself.
Did you ever have a toy car as a kid that, when you pushed it along the floor, made a radar dish or something on the top turn? It's the same principle. The wheels power the prop and the prop pushes the car along. The wheels turning along the ground power the prop.
 
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