FRESNEL LENS 9 SUN COLLECTOR SOLAR POWER SPOT
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It really gives insight into what the sun is capable of.
2 years ago 5
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the melting point of glass is 4200 F.
2 years ago 4
All Comments (96)
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Yep when gas and electricity gets too expensive we'll all be starting wood fires for heat and cooking with the lens from the TV we can't afford to power anymore.
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OMG...I never put two and two together. LOL now I love fresnel lenses. We use them to induce prism and are a pain to apply....net tv that goes out...solar oven. Kinda feel bad putting them on glasses now.
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yes, but will it float?
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Oh and don't clean these with windex! It makes them cloudy.
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@elijahvivio1996 elijahvivio You bet! Make sure you separate the Fresnel Lens from the other screens carefully. Make a frame around the edges to keep it flat when you use it. Pine works but it warps if not stored flat. Like a picture frame. (pine also gives you splinters if its cheap). It works well when the side with the Fresnel pattern lines faces the sun. Be sure to use eye protection. Sunglases are not enough. Get welding goggles. They are not expensive and worth it to save your retinas
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honey yummmmm..........
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i have a screen from a old projection screen tv.... can i achieve something like this with it
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make one the size of a house.
then california.
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where can i get this? I WANT ONE SO BAD!
pigpal2 1 year ago
@pigpal2 check our website:-)
GREENPOWERSCIENCE 1 year ago
i have been told that the screen from a projection tv can do the same thing (focusing light, starting fires etc.) do you know if its a fresnel lens also?
AKA0987 1 year ago
If the TV is pre 1995, it is good, newer tvs are view all angles. So they do not provide a clear lens. They actually are fuzzy and diffused.
GREENPOWERSCIENCE 1 year ago
Dan, I have two fresnels lenses, both one square foot each. Can you "stack" them and double the power? Like with a space between them?
shamwowwow 2 years ago
Stacking them shortens the focal length and because the light must pass through two layers its power is filtered down by whatever percentage of opacity the lenses are. So you get less power.
Dan
GREENPOWERSCIENCE 2 years ago