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quantum US English

A discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents

quantum bit US English

The basic unit of information in a quantum computer

quantum dot US English

A nanoscale particle of semiconducting material that can be embedded in cells or organisms for various experimental purposes, such as labeling proteins

quantum jump US English

An abrupt transition of an electron, atom, or molecule from one quantum state to another, with the absorption or emission of a quantum

quantum state US English

A state of a quantized system that is described by a set of quantum numbers

quantum gravity US English

A theory that attempts to explain gravitational physics in terms of quantum mechanics

quantum meruit US English

A reasonable sum of money to be paid for services rendered or work done when the amount due is not stipulated in a legally enforceable contract

quantum number US English

A number that occurs in the theoretical expression for the value of some quantized property of a subatomic particle, atom, or molecule and can only have certain integral or half-integral values

quantum theory US English

A theory of matter and energy based on the concept of quanta, especially quantum mechanics

quantum computer US English

A computer that makes use of the quantum states of subatomic particles to store information

quantum mechanics US English

The branch of mechanics that deals with the mathematical description of the motion and interaction of subatomic particles, incorporating the concepts of quantization of energy, wave-particle duality, the uncertainty principle, and the correspondence principle

quantum medicine US English

A branch of complementary medicine that uses low-dosage electromagnetic radiation in the treatment, diagnosis, and prevention of disease

quantum chromodynamics US English

A quantum field theory in which the strong interaction is described in terms of an interaction between quarks mediated by gluons, both quarks and gluons being assigned a quantum number called “color.”

quantum electrodynamics US English

A quantum field theory that deals with the electromagnetic field and its interaction with electrically charged particles

quantum field theory US English

A field theory that incorporates quantum mechanics and the principles of the theory of relativity

quantum leap in quantum jump US English

A huge, often sudden, increase or change in something