any theory predating quantum mechanics that encompassed Planck’s radiation formula and a scheme for obtaining discrete energy states for atoms, as Bohr theory.
any theory that treats certain phenomena by the methods of quantum mechanics:
a quantum theory of gravitation.
a theory concerning the behaviour of physical systems based on Planck’s idea that they can only possess certain properties, such as energy and angular momentum, in discrete amounts (quanta). The theory later developed in several equivalent mathematical forms based on De Broglie’s theory and on the Heisenberg uncertainty principle See wave mechanics
quantum theory n.
The theory that radiant energy is transmitted in the form of discrete units.
noun 1. a hypothetical technique to instantly transfer properties from one quantum system to another without contact, or to transfer a quantum state to an arbitrarily distant location. noun 1. (physics) a process by which a change in the quantum state of one subatomic particle in an entangled pair occurs instantly in its twin, wherever […]
- Quantum tunneling
quantum tunneling A quantum mechanical effect in which particles have a finite probability of crossing an energy barrier, such as the energy needed to break a bond with another particle, even though the particle’s energy is less than the energy barrier. Quantum tunneling has no counterpart in classical mechanics, in which a particle can never […]
[kvahnts] /kvɑnts/ noun 1. Johann Joachim [yoh-hahn yoh-ah-khim] /ˈyoʊ hɑn ˈyoʊ ɑ xɪm/ (Show IPA), 1697–1773, German flutist and composer: teacher of Frederick the Great.
[chwahn-joh] /ˈtʃwɑnˈdʒoʊ/ noun, Pinyin. 1. a seaport in SE Fujian province, in SE China, on Taiwan Strait.