show how it works some of the generators are attached to the underside of an aluminum plate that connected by a cable to the electric fan mounted on the model plane. yeah i think i'm pretty harmless simply put my hand on top of the body heat transfers to the module. the cold side is the big block of aluminum underneath i mean sort temperature differences what makes the rotor spin. between is this fluid. nasir has used this kind of technology for ages the voyager one space probe launched in one thousand nine hundred seventy seven is powered by thermoelectric generators but still work after all this time. in a sense if it can work for forty years in space time that must be useful on earth and. that's precisely what he's demonstrated by developing his special stoves. its walls contain a hundred thermoelectric generators. the temperature inside is about three