Fresnel Lens melting GRANITE 2300˚ Fahrenheit make Obsidian FRESNEL LENS GREENPOWERSCIENCE 1:30 8 years ago 292 179 Скачать Далее
Giant lens from old TV melts sand into glass #physics #science joemyheck 0:27 8 months ago 5 706 932 Скачать Далее
Melt a Penny with the Sun and a Fresnel Lens - (magnifying glass) John Daniels 1:44 7 years ago 18 976 Скачать Далее
Burning stuff with a giant fresnel lens + how a DLP projector works TheBackyardScientist 8:32 5 years ago 2 545 990 Скачать Далее
FRESNEL LENS MYTHS about solar projects and misconceptions GREENPOWERSCIENCE 7:53 7 years ago 129 279 Скачать Далее
FRESNEL LENS EXTREME Solar 3000˚ F Sunlight Melting a Burning Stuff with the Sun GREENPOWERSCIENCE 5:10 12 years ago 334 708 Скачать Далее
2,000°F Solar Power! Melting Metal With A Giant Magnifying Glass The Action Lab 4:36 7 years ago 222 395 Скачать Далее