单词 | scientific theory |
释义 | scientific theory (once / 20485 pages) n WORD FAMILY scientific theory: scientific theories USAGE EXAMPLESIn 2011, Perry said that global warming was an unproven scientific theory. The Guardian(Dec 15, 2016) Meanwhile, scientific theories live in mortal danger of facts. Wall Street Journal(Nov 25, 2016) “The scientific theory underlying cryonics is speculative and controversial, and there is considerable debate about its ethical implications,” the judge said in a statement. New York Times(Nov 18, 2016) n a theory that explains scientific observations scientific theories must be falsifiable Hypo|Hyper big bang theory, big-bang theory (cosmology) the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperature nebular hypothesis(cosmology) the theory that the solar system evolved from a hot gaseous nebula planetesimal hypothesis(cosmology) the theory that the solar system was formed by the gravitational accumulation of planetesimals continuous creation theory, steady state theory(cosmology) the theory that the universe maintains a constant average density with matter created to fill the void left by galaxies that are receding from each other Newton's theory of gravitation, gravitational theory, theory of gravitation, theory of gravity(physics) the theory that any two particles of matter attract one another with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them organicismtheory that the total organization of an organism rather than the functioning of individual organs is the determinant of life processes atomic theorya theory of the structure of the atom cell doctrine, cell theory(biology) the theory that cells form the fundamental structural and functional units of all living organisms; proposed in 1838 by Matthias Schleiden and by Theodor Schwann undulatory theory, wave theory, wave theory of light(physics) the theory that light is transmitted as waves corpuscular theory, corpuscular theory of light(physics) the theory that light is transmitted as a stream of particles kinetic theory, kinetic theory of gases(physics) a theory that gases consist of small particles in random motion Einstein's theory of relativity, relativity, relativity theory, theory of relativity(physics) the theory that space and time are relative concepts rather than absolute concepts supersymmetry(physics) a theory that tries to link the four fundamental forces quantum theory(physics) a physical theory that certain properties occur only in discrete amounts (quanta) indeterminacy principle, uncertainty principle(quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time germ theory(medicine) the theory that all contagious diseases are caused by microorganisms information theory(computer science) a statistical theory dealing with the limits and efficiency of information processing Arrhenius theory of dissociation, theory of dissociation, theory of electrolytic dissociation(chemistry) theory that describes aqueous solutions in terms of acids (which dissociate to give hydrogen ions) and bases (which dissociate to give hydroxyl ions); the product of an acid and a base is a salt and water evolutionism, theory of evolution, theory of organic evolution(biology) a scientific theory of the origin of species of plants and animals Ostwald's theory of indicators, theory of indicators(chemistry) the theory that all indicators are either weak acids or weak bases in which the color of the ionized form is different from the color before dissociation theory of inheritance(biology) a theory of how characteristics of one generation are derived from earlier generations association theory, associationism(psychology) a theory that association is the basic principle of mental activity atomism(psychology) a theory that reduces all mental phenomena to simple elements (sensations and feelings) that form complex ideas by association functionalisma psychology based on the assumption that all mental process are useful to an organism in adapting to the environment Gestalt psychology, configurationism(psychology) a theory of psychology that emphasizes the importance of configurational properties game theory, theory of games(economics) a theory of competition stated in terms of gains and losses among opposing players Bohr theory(physics) a theory of atomic structure that combined Rutherford's model with the quantum theory; electrons orbiting a nucleus can only be in certain stationary energy states and light is emitted when electrons jump from one energy state to another Rutherford atomfirst modern concept of atomic structure; all of the positive charge and most of the mass of the atom are contained in a compact nucleus; a number of electrons (equal to the atomic number) occupy the rest of the volume of the atom and neutralize the positive charge Einstein's general theory of relativity, general relativity, general relativity theory, general theory of relativitya generalization of special relativity to include gravity (based on the principle of equivalence) Einstein's special theory of relativity, special relativity, special relativity theory, special theory of relativitya physical theory of relativity based on the assumption that the speed of light in a vacuum is a constant and the assumption that the laws of physics are invariant in all inertial systems kinetic theory of heata theory that the temperature of a body increases when kinetic energy increases Mendelianism, Mendelismthe theory of inheritance based on Mendel's laws Darwinisma theory of organic evolution claiming that new species arise and are perpetuated by natural selection Lamarckisma theory of organic evolution claiming that acquired characteristics are transmitted to offspring punctuated equilibrium, theory of punctuated equilibriuma theory of evolution holding that evolutionary change in the fossil record came in fits and starts rather than in a steady process of slow change theory a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena |
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