Quantum vs Singlet - What's the difference?

quantum | singlet |

In context|physics|lang=en terms the difference between quantum and singlet

is that quantum is (physics) involving quanta while singlet is (physics) a multiplet having a single member, especially a single spectroscopic peak.

As nouns the difference between quantum and singlet

is that quantum is while singlet is (uk|australian|irish|nigeria|new zealand) a vest; a sleeveless garment with a low-cut neck, often worn underneath a shirt.

As an adjective quantum

is of a change, sudden or discrete, without intermediate stages.



  • * 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 noun)
  • (UK, Australian, Irish, Nigeria, New Zealand) A vest; a sleeveless garment with a low-cut neck, often worn underneath a shirt.
  • * 1949 , George Orwell, Nineteen Eighty-Four , p28,
  • Winston wrenched his body out of bed — naked, for a member of the Outer Party received only 3,000 clothing coupons annually, and a suit of pyjamas was 600 — and seized a dingy singlet and a pair of shorts that were lying across a chair.
  • * 2000 , Nicole Matthews, Kitsch on the Fringe: Suburbia in Recent Australian Comedy Film'', Roger Webster, ''Expanding Suburbia: Reviewing Suburban Narratives , page 176,
  • The semiotics of the singlet - immediately identifiable in Australia, especially in its usual shade of blue, with male manual labourers16 - underlines the contrast between the effete fakery of ballroom costumes and real masculinity to be found underneath or in the world of folk dancing.
  • * 2006 , Albert Moran, Errol Vieth, Film in Australia: An Introduction , page 85,
  • However, even in the latter he wears a blue singlet to help remind the audience of his working-class roots.
  • * 2009 , Deborah Penrith, Live & Work in: Australia , Crimson Publishing, UK, page 192,
  • Women wear dresses, cropped trousers and vests with lightweight linen jackets and you will find men in anything from a business suit to a pair of stubbies (very short shorts) and a singlet top (white vest) or knee-length cargo trousers.
  • (physics) A multiplet having a single member, especially a single spectroscopic peak.
  • (physics, quantum mechanics) A quantum state having zero spin.
  • * 2003 , Timothy M. Cox, 90: Protoporphyria'', Karl M. Kadish, Kevin M. Smith, Roger Guilard, (editors), ''The Porphyrin Handbook , Volume 14: Medical Aspects of Porphyrins, page 132,
  • When a ground state molecule absorbs a photon, the values of the electron spins are not altered and thus the primary excited state is the singlet state.
  • * 2010 , Donald L. Pavia, Gary M. Lampman, George S. Kriz, Randall G. Engel, A Small Scale Approach to Organic Laboratory Techniques , page 416,
  • However, even if it were possible to supply benzophenone with radiation of the appropriate wavelength to produce the second excited singlet' state of the molecule, this '''singlet''' would rapidly convert to the lowest ' singlet state (S1).


    * (garment worn underneath a shirt) undershirt, vest, wifebeater

    Derived terms

    * singlet oxygen