Early this morning NASA kicked off Operation LENS, an ambitious plan to concentrate and collect solar power using a giant magnifying glass in outer space. Long speculated to be a rumor, the 7,000,000 ...
2,000°F solar power! Melting metal with a giant magnifying glass In this video I test out my new giant Fresnel lens. I show how it ignites wood in about 1 second. Then I stick a rock under the lens ...
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