Ever heard about a fresnel lens?
No? – Me neither!
They are the modern version of the old magnifying glass in the sun trick. This time the sunlight is collected from a lot larger area and the result is HUGE. Check out these videos and see for yourself what it can be used for.
FRESNEL SOLAR STIRLING ENGINE SUN POWER ALTERNATIVE ENERGY
SOLAR STILL DISTILLED WATER FRESNEL LENS PURIFICATION GREEN
4 SOLAR COOKING PASTA FRESNEL LENS STOVE OVEN SOLAR POWER
No doubt about it – the Fresnel Lens are HOT 