SOLAR DEATH RAY WATER aqua lens with
This is another solar water lens that is almost 30 inches in diameter and can burn through wood quickly. It delivers a very large powerful focal point that is only useful around noon in the summertime when the sun is directly overhead. The material is crystal clear vinyl shower curtain. This lens concentrates about 500 watts of solar heat energy to a focal point of 1 inch optimal with a 3-6 inch scatter.
可生火：
This is a 43″ diameter water parabola lens that can reach in excess of 1,000f The water lens is running at about 80% of maximum power. The water needs to be distilled, rain or R/O for maximum power.
可煮食，可作熱水淋浴：
FRESNEL SOLAR STEAM BOILER VACUUM TUBE STEEL WOOL TEAVANA SOLAR SCHOOL