FLINT, Mich. (CN) — The United States sued a Michigan museum for two giant, century-old lenses that “revolutionized lighthouse optics” in the 1800s, making light visible for more ...
The Action Lab on MSN
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 and it immediately starts popping do to the extreme heat. The rock ...
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