- plural of quantum.
- quantity or amount: the least quantum of evidence.
- a particular amount.
- a share or portion.
- a large quantity; bulk.
- the smallest quantity of radiant energy, equal to Planck's constant times the frequency of the associated radiation.
- the fundamental unit of a quantized physical magnitude, as angular momentum.
- sudden and significant: a quantum increase in productivity.
Origin of quantum
Examples from the Web for quanta
Historical Examples of quanta
These are the axioms which properly relate only to quantities (quanta) as such.The Critique of Pure Reason
As Poincaré now points out, the trouble is that the quanta are not constant.
From this point of view the quanta appear as atoms of energy.
Hunc igitur laborem nostrum ut tam Gratis animis accipiatis, quanta sedulitate a nobis est obitus, ex aequo omnes rogatos volo.Terrestrial and Celestial Globes Vol II
Edward Luther Stevenson
Quanta calcina si fatta di statue e d'altri ornamenti antichi!Renaissance in Italy, Volume 2 (of 7)
John Addington Symonds
- the plural of quantum
- the smallest quantity of some physical property, such as energy, that a system can possess according to the quantum theory
- a particle with such a unit of energy
- amount or quantity, esp a specific amount
- (often used with a negative) the least possible amount that can sufficethere is not a quantum of evidence for your accusation
- something that can be quantified or measured
- (modifier) loosely, sudden, spectacular, or vitally importanta quantum improvement
Word Origin for quantum
1610s, "one's share or portion," from Latin quantum (plural quanta) "as much as, so much as; how much? how far? how great an extent?" neuter singular of correlative pronomial adjective quantus "as much" (see quantity). Introduced in physics directly from Latin by Max Planck, 1900; reinforced by Einstein, 1905. Quantum theory is from 1912; quantum mechanics, 1922; quantum jump is first recorded 1954; quantum leap, 1963, often figurative.
- The smallest amount of a physical quantity that can exist independently, especially a discrete quantity of electromagnetic radiation.
- This amount of energy regarded as a unit.
- A quantity or an amount.
- A discrete, indivisible manifestation of a physical property, such as a force or angular momentum. Some quanta take the form of elementary particles; for example, the quantum of electromagnetic radiation is the photon, while the quanta of the weak force are the W and Z particles. See also quantum state.