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thermionic spacecraft

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  • thermionic power converter — ▪ electronics Introduction also called  thermionic generator,  thermionic power generator,  or  thermoelectric engine        any of a class of devices that convert heat directly into electricity using thermionic emission rather than first… …   Universalium

  • Radioisotope thermoelectric generator — A radioisotope thermoelectric generator (RTG, RITEG) is an electrical generator which obtains its power from radioactive decay. In such a device, the heat released by the decay of a suitable radioactive material is converted into electricity by… …   Wikipedia

  • Field electron emission — It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. Field emission (FE) (also known as field… …   Wikipedia

  • technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …   Universalium

  • Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …   Wikipedia

  • thermoelectric power generator — Introduction       any of a class of solid state devices (solid state device) that either convert heat directly into electricity or transform electrical energy into thermal power for heating or cooling. Such devices are based on thermoelectric… …   Universalium

  • Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …   Wikipedia

  • Ion thruster — An ion thruster is a form of electric propulsion used for spacecraft propulsion that creates thrust by accelerating ions. Ion thrusters are characterized by how they accelerate the ions, using either electrostatic or electromagnetic force.… …   Wikipedia

  • Atomic battery — The terms atomic battery, nuclear battery, tritium battery and radioisotope generator are used to describe a device which uses the emissions from a radioactive isotope to generate electricity. Like nuclear reactors they generate electricity from… …   Wikipedia

  • Electrodynamic tether — Electrodynamic tethers are long conducting wires, such as the one deployed from the tether satellite, which can operate on electromagnetic principles as generators, by converting their kinetic energy to electrical energy, or as motors, converting …   Wikipedia

  • TOPAZ nuclear reactor — The TOPAZ nuclear reactor is a lightweight nuclear reactor developed for long term space use by the Soviet Union. Cooled by liquid metal, it uses a high temperature moderator containing hydrogen and highly enriched fuel and produces electricity… …   Wikipedia

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