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Spherical glass solar energy generator
- lutusp 14y agoA normal lens is much more efficient than a sphere. And a Fresnel lens is more economical as well as more efficient. It's very pretty, and it may actually be intended as a work of art. But it's not efficient technology. Here is an optical analysis of a sphere used as a lens -- the light doesn't converge to a single point, which is why spheres are more decorations than lenses: http://i.imgur.com/4e4FX.png http://i.imgur.com/4e4FX.png