Noun
The word is derived from quantum
of Quantum
Source: Webster's dictionaryA common misunderstanding is that (a) the quanta of the fields act in the same manner as (b) the charged particles that generate the fields. Source: Internet
Albert Einstein in 1905, attributed "particle-like" and discrete exchanges of momenta and energy, characteristic of "field quanta", to the electromagnetic field. Source: Internet
Because the virtual quarks are not stable wave packets (quanta), but irregular and transient phenomena, it is not meaningful to ask which quark is real and which virtual; only the excess is apparent from the outside. Source: Internet
EMR in the visible light region consists of quanta (called photons ) that are at the lower end of the energies that are capable of causing electronic excitation within molecules, which leads to changes in the bonding or chemistry of the molecule. Source: Internet
A summary of Einstein's thinking about the aether hypothesis, relativity and light quanta may be found in his 1909 (originally German) lecture "The Development of Our Views on the Composition and Essence of Radiation". Source: Internet
Einstein's light quanta were nearly universally rejected by all physicists, including Max Planck and Niels Bohr. Source: Internet