Saturday, October 30, 2010

Archimede and solar power

Tousands of years ago, Archimede burned sailing boats with the aid of a simple mirror
and he didn´t know at that time that the same trick could cut the cost of solar thermal power plants by hundreds of millions of dollars.

A HIGHLY reflective thin film made of microlayers of silver and copper, protected
by a polymer and backed with glass mirrors concentrate heat from the sun to create steam that spins conventional turbines.
The thin fi lm—which replaces those mirrors reflects more light, increasing
power output.

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