Back in November, I got excited about "Melting Rock With Sunlight", after seeing a scientist from the Solar Furnace Research Facility in Southern France demonstrating his concave mirror, focusing the sun's energy, reaching temperatures of over 3500c.
Well, an American teenager has built one of his own, from an old satellite dish and loads of mirror tiles, and has achieved the same sort of results.
As stated in my original post - imagine what you could do with this free energy from the sun? Off the top of my head, a smaller version focusing onto water to heat it for households, or a larger version heating water into steam to generate electricity, seems like a such a simple idea, maybe too simple for anyone to manufacturer. Maybe I should get in contact with Sir James Dyson.
Here's Captain Slow aka James May from his Big Idea series, visiting Spain's Solar Tower..
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