Рет қаралды 790
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Several years ago, I bought a lamp that caught my attention in a garage sale. What impressed me was that its reflector was made of aluminum and had a concave surface in the form of a parabolic mirror. During my initial experiments with this parabolic dish I was able to verify that it has the property of concentrating the sun's rays in a small area and that prompted me to develop the ideas that I will present in this Instructable Project.