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Decay theory — proposes that memory fades due to the mere passage of time. Information is therefore less available for later retrieval as time passes and memory, as well as memory strength, wears away.[1] When we learn something new, a neurochemical “memory… … Wikipedia
Decay energy — Nuclear physics Radioactive decay Nuclear fission Nuclear fusion Classical decays … Wikipedia
activity — /ak tiv i tee/, n., pl. activities. 1. the state or quality of being active: There was not much activity in the stock market today. He doesn t have enough physical activity in his life. 2. a specific deed, action, function, or sphere of action:… … Universalium
Decay chain — In nuclear science, the decay chain refers to the radioactive decay of different discrete radioactive decay products as a chained series of transformations. Most radioactive elements do not decay directly to a stable state, but rather undergo a… … Wikipedia
decay — I. verb Etymology: Middle English, from Anglo French decaïr, from Late Latin decadere to fall, sink, from Latin de + cadere to fall more at chance Date: 15th century intransitive verb 1. to decline from a sound or prosperous condition 2. to… … New Collegiate Dictionary
Decay-accelerating factor — CD55 molecule, decay accelerating factor for complement (Cromer blood group) PDB rendering based on 1h03 … Wikipedia
decay time — 1. a unit of relative time used in physics. Decay time is similar to half life, but shorter and less familiar. It is the time required for an exponentially decaying process (such as radioactivity) to decrease to 1/e = 36.7879% of its original… … Dictionary of units of measurement
Radioactive decay — For particle decay in a more general context, see Particle decay. For more information on hazards of various kinds of radiation from decay, see Ionizing radiation. Radioactive redirects here. For other uses, see Radioactive (disambiguation).… … Wikipedia
Orbital decay — is the process of prolonged reduction in the altitude of a satellite s orbit. This can be due to drag produced by an atmosphere due to frequent collisions between the satellite and surrounding air molecules. The drag experienced by the object is… … Wikipedia
Distance decay — is a geographical term which describes the effect of distance on cultural or spatial interactions. The distance decay effect states that the interaction between two locales declines as the distance between them increases. Once the distance is… … Wikipedia
Corium (nuclear reactor) — LFCM redirects here. For the airport, see List of airports by ICAO code: L. The Three Mile Island reactor 2 after the meltdown. Corium, also called fuel containing material (FCM) or lava like fuel containing material (LFCM), is a lava like molten … Wikipedia
