Radioisotope Thermoelectric Generator
A Radioisotope Thermoelectric Generator (RTG) is a type of power source that uses the heat generated by the natural decay of radioactive isotopes, such as plutonium-238, to generate electricity through the thermoelectric effect. The heat produced by the decay of the isotopes is converted into electricity by thermocouples, which are made of two different metals that generate a voltage when heated. RTGs have been used to power spacecraft and other remote systems that require a reliable and long-lasting source of electricity, such as the Voyager and Pioneer spacecraft, Mars rovers, and deep space probes. RTGs are preferred over other power sources in situations where solar power is not feasible, such as in deep space missions or on the surface of planets with low solar radiation. RTGs are also used in remote locations on Earth, such as in lighthouses and weather stations.
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