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rock burst
Science; General science
A seismic event that is caused by the mining of underground or surface openings in a high-stress environment. The Mine Safety and Health Administration (MSHA) defines a rock burst ...
nuclear quadrupole resonance
Science; General science
A selective absorption phenomenon observable in a wide variety of polycrystalline compounds containing nonspherical atomic nuclei when placed in a magnetic radio-frequency field. ...
inertial navigation system
Science; General science
A self-contained system that can automatically determine the position, velocity, and attitude of a moving vehicle for the purpose of directing its future course. Based on prior ...
star
Science; General science
A self-luminous body that during its life generates (or will generate) energy and support by thermonuclear fusion.
peanut
Science; General science
A self-pollinated, one- to six-seeded legume. It is cultivated throughout the tropical and temperate climates of the world. The oil, expressed from the seed, is of high quality, ...
mink
Science; General science
A semiaquatic, carnivorous mammal in the family Mustelidae. The American mink ( Mustela vison ) is found in Alaska and Canada and throughout most of the United States. The range ...
phototransistor
Science; General science
A semiconductor device with electrical characteristics that are light-sensitive. Phototransistors differ from photodiodes in that the primary photoelectric current is multiplied ...
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