The vacuum tubes are designed to keep the heat in, we have also a reflector that concentrates the sun rays. Some people put these little sun dials that works like a bull's eye to indicate if the reflectors are all angled.
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The vacuum tubes are designed to keep the heat in, we have also a reflector that concentrates the sun rays. Some people put these little sun dials that works like a bull's eye to indicate if the reflectors are all angled. 1 comment
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@neauoire cooking stuff with the raw power of the sun is so cool