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The folks @ MIT are warming up to the idea of parabolic solar collectors, recently demonstrating this 12-foot dish of massive heating power -
-- the completed mirror focuses enough solar energy at its focal point to melt solid steel. The energy of typical sunlight is concentrated by a factor of 1,000. This was showcased during a demonstration, in which a team member held up a board, which instantly and violently combusted, when brought within range of the focal point.Hmmm ... can't help but imagine pitting it against the Light Sharpener in a 'solar-ray-deathmatch' - MIT Students Develop Solar Dish(Thanks, Noah!)
From the pages of MAKE:
Made on Earth. MAKE 03 - page 16. Reports from the world of backyard technology, including a shopping cart go-kart, the "Solar Death Ray," a demolished house sculpture, a gas tank bass instrument, and some seriously big speakers. Subscribers--read this article now in your digital edition or get MAKE 03 @ the Maker store.
I think every step in direction of efficient solar power is great!
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Steel melts at well over 2,000°F: for those with humbler needs, may I suggest this fine item? Melting a penny means at least 800°F, enough to create steam for heat or electricity generation. So where are those household power plants?
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