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121Radon — This article is about the chemical element. For other uses, see Radon (disambiguation). astatine ← radon → francium Xe ↑ Rn ↓ Uuo …
122Kathryn Janeway — Star Trek character|if=|Title = Kathryn Janeway bgcolor = #ccccff Caption = Kathryn Janeway aboard the USS Voyager Size = 250px Species = Human Gender = Female Birth = May 20, 2332 or 2336 Planet = Earth Affiliation = Starfleet Posting = USS Al… …
123Radionuclide — A radionuclide is an atom with an unstable nucleus, which is a nucleus characterized by excess energy available to be imparted either to a newly created radiation particle within the nucleus or to an atomic electron. The radionuclide, in this… …
124USS Voyager (Star Trek) — USS Voyager (NCC 74656) the USS Voyager, NCC 74656 First appearance Caretaker Launched 2371 General characteristics …
125Lime kiln — A lime kiln is a kiln used to produce quicklime by the calcination of limestone (calcium carbonate). The chemical equation for this reaction is::CaCO3 + heat → CaO + CO2This reaction takes place at 900°C (at which temperature the partial pressure …
126Nuclear fuel cycle — The nuclear fuel cycle, also called nuclear fuel chain, is the progression of nuclear fuel through a series of differing stages. It consists of steps in the front end, which are the preparation of the fuel, steps in the service period in which… …
127Force field — For other uses, see Force field (disambiguation). A force field, sometimes known as an energy shield, force shield, or deflector shield is a concept of a field tightly bounded and of significant magnitude so that objects affected by the… …
128Smoke detector — A smoke detector is a device that detects smoke, typically as an indicator of fire. Commercial, industrial, and mass residential devices issue a signal to a fire alarm system, while household detectors, known as smoke alarms, generally issue a… …
