FRESNEL LENS 64″ spot Solar concrete crusher Solar can melting
www.greenpowerscience.com This is a 64″ spot Fresnel Lens with a max temperature above 3000f. The concrete and rock shatters from the temperature shock. Slowly adding heat allows for melting. The rock was exposed for 60 seconds and the two pieces heated 8 ounces of water from 68f to about 130f within seconds.
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