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forest pests
Science; General science
A forest pest is any organism that adversely affects the functioning of forest trees. Exotic forest pests, which have been introduced into the United States from abroad, have been ...
resonance ionization spectroscopy
Science; General science
A form of atomic and molecular spectroscopy in which wavelength-tunable lasers are used to remove electrons from (ionize) a given kind of atom or molecule. Laser-based resonance ...
electrostriction
Science; General science
A form of elastic deformation of a dielectric induced by an electric field; specifically, the term applies to those components of strain which are independent of reversal of the ...
multivibrator
Science; General science
A form of electronic circuit that employs positive feedback to cross-couple two devices so that two distinct states are possible, for example, one device ON and the other device ...
polymorphism (genetics)
Science; General science
A form of genetic variation, specifically, a discontinuous variation that occurs within plant and animal species in which distinct forms exist together in the same population, ...
hydrofoil craft
Science; General science
A form of high-speed ship that supports its weight by means of wings (properly called hydrofoils, or simply foils) beneath the surface of the water. The hydrofoils generate lift ...
virtual reality
Science; General science
A form of human-computer interaction in which a real or imaginary environment is simulated and users interact with and manipulate that world. Users travel within the simulated ...
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