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.