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3D Print with Sand (2011) [video]
- brink 12y agoWhat's more interesting is how much energy there is in just that screen's surface area of sunlight. Enough to turn sand molten in under a second. Thinking of just how far away that is from the sun, and how much more surface area there is in a sphere with a radius that size..
- baddox 12y agoI believe you can get around a kilowatt per square meter, obviously depending on latitude, weather, and other factors. That lens looks about like a square meter.
- seiferteric 12y ago*Kilowatt/m^2
- baddox 12y agoYeah, that's the prefix I was looking for.
- huuu 12y agoA laser of 20-100 Watt is enough for Selected Laser Sintering. So a square meter lens for the sun will give you more than ten times the power professional SLS printers are using. That is indeed a lot. Edit: here a nice answer about the heat generated: http://physics.stackexchange.com/a/103039 http://physics.stackexchange.com/a/103039
- yzzxy 12y agoNice! Reminds me of this very relaxing video: http://vimeo.com/9498805 http://vimeo.com/9498805
- IanCal 12y agoThis is really cool, although leaving that size of fresnel lens uncovered makes me nervous.