Quantum vs Differential - What's the difference?

quantum | differential |

As nouns the difference between quantum and differential

is that quantum is while differential is the differential gear in an automobile etc.

As an adjective differential is

of, or relating to a difference.



  • * Burke
  • without authenticating the quantum of the charges
  • * 1749 , (Henry Fielding), Tom Jones , Folio Society 1973, p. 416:
  • The reader will perhaps be curious to know the quantum of this present, but we cannot satisfy his curiosity.
  • *1997 , (Kiran Nagarkar), Cuckold , HarperCollins 2013, p. 375:
  • *:Otherwise I will have given the lie to my maxim that whether you work eight or twenty hours, the quantum of work that gets done on a normal day is the same.
  • * 2008 , The Times of India , 21 May 2008, [http://timesofindia.indiatimes.com/Business/India_Business/Fuel_price_hike_put_off_over_quantum/articleshow/3087364.cms]:
  • The Congress's core ministerial panel on Friday gave its green signal to raising motor fuel prices but the quantum of increase emerged as a hitch.
  • The amount or quantity observably present, or available.
  • *1979 , , Smiley's People , Folio Society 2010, p. 96:
  • *:Each man has only a quantum of compassion, he argued, and mine is used up for the day.
  • * 1999 , Joyce Crick, translating Sigmund Freud, The Interpretation of Dreams , Oxford 2008, p. 34:
  • The dream of flying, according to Strümpell, is the appropriate image used by the psyche to interpret the quantum of stimulus proceeding from the rise and fall of the lungs when the cutaneous sensation of the thorax has simultaneously sunk into unconsciousness.
  • (physics) The smallest possible, and therefore indivisible, unit of a given quantity or quantifiable phenomenon.
  • * 2002 , David C Cassidy et al., Understanding Physics , Birkhauser 2002, p. 602:
  • The quantum of light energy was later called a photon .
  • (math) A definite portion of a manifoldness, limited by a mark or by a boundary.
  • (William Kingdon Clifford)


  • Of a change, sudden or discrete, without intermediate stages.
  • (informal) Of a change, significant.
  • (physics) Involving quanta.
  • * {{quote-magazine, date=2012-01
  • , author=Michael Riordan , title=Tackling Infinity , volume=100, issue=1, page=86 , magazine= citation , passage=Some of the most beautiful and thus appealing physical theories, including quantum' electrodynamics and ' quantum gravity, have been dogged for decades by infinities that erupt when theorists try to prod their calculations into new domains. Getting rid of these nagging infinities has probably occupied far more effort than was spent in originating the theories.}}
  • (computing theory) Relating to a quantum computer.
  • Derived terms

    * quantum algorithm * quantum bit * quantum bogodynamics * quantum brain dynamics * quantum calculus * quantum cascade laser * quantum channel * quantum chaos * quantum chemistry * quantum chromodynamics * quantum circuit * quantum computer * quantum computing * quantum cryptography * quantum darwinism * quantum decoherence * quantum degeneracy * quantum dense coding * quantum dot * quantum effect device * quantum efficiency * quantum electrochemistry * quantum electrodynamics * quantum electronics * quantum entanglement * quantum field theory * quantum fingerprinting * quantum flavordynamics * quantum fluctuation * quantum gate * quantum gauge theory * quantum geometry * quantum gravity * quantum group * quantum gyroscope * quantum Hall effect * quantum harmonic oscillator * quantum heterostructure * quantum history * quantum hydrodynamics * quantum immortality * quantum indeterminacy * quantum inequality * quantum information * quantum jump * quantum leap * quantum level * quantum libet * quantum limit * quantum link * quantum mechanics * quantum network * quantum neural network * quantum number * quantum ontology * quantum operation * quantum optics * quantum phase transition * quantum physics * quantum programming * quantum psychology * quantum randomness * quantum register * quantum scalar field * quantum solvent * quantum sort * quantum state * quantum statistical mechanics * quantum suicide * quantum superposition * quantum teleportation * quantum theory * quantum tomography * quantum valebant * quantum vibration * quantum virtual machine * quantum waveform generator * quantum well * quantum wire * quantum yield * quantum Zeno effect




    (en adjective)
  • of, or relating to a difference
  • differential characteristics
  • * Motley
  • For whom he produced differential favours.
  • dependent on, or making a difference; distinctive
  • having differences in speed or direction of motion
  • (mathematics) of, or relating to differentiation, or the differential calculus
  • Noun

    (en noun)
  • the differential gear in an automobile etc
  • a qualitative or quantitative difference between similar or comparable things
  • (mathematics) an infinitesimal change in a variable, or the result of differentiation
  • One of two coils of conducting wire so related to one another or to a magnet or armature common to both, that one coil produces polar action contrary to that of the other.
  • A form of conductor used for dividing and distributing the current to a series of electric lamps so as to maintain equal action in all.
  • (Knight)

    Derived terms

    * differential amplifier * differential analyzer * differential coefficient * differential gear * differential equation * partial differential equation