Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Chemical decomposition induced by light or other radiant energy.

from The Century Dictionary.

  • noun In botany, the movements of protoplasm under the influence of light: distinguished as apostrophe and epistrophe.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry Any chemical reaction in which a compound is decomposed after absorbing a photon

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek φωτ- (phōt-), root of φῶς (phōs, "light") + λύσις (lusis, "decomposition").

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Examples

  • 4 ClOOCl + hv -- ClO + ClO so the rate of photolysis, which is proportional to the absorption cross-section, determines how much ClO is available for the cycle.

    Rabett Run EliRabett 2009

  • 4 ClOOCl + hv -- ClO + ClO so the rate of photolysis, which is proportional to the absorption cross-section, determines how much ClO is available for the cycle.

    Archive 2009-07-01 EliRabett 2009

  • Another way to initiate some reactions rapidly is flash photolysis, i.e. by short light flashes, a method developed by Ronald G.W. Norrish at Cambridge and George

    The Nobel Prize in Chemistry: The Development of Modern Chemistry 2010

  • Double boxes are stable species and the arrows represent photolysis.

    Developmental buffering, or how to live with your bad genes - The Panda's Thumb 2010

  • Oil floating at the ocean's surface has a limited lifespan - it's been collected and destroyed by skimming, booms, chemical dispersants, evaporation, photolysis, biodegradation - and took a beating from wind and waves when tropical depression Bonnie blew through over the weekend.

    Georgianne Nienaber: Flyover at the Macondo Wellhead: Damage Control at "The Source" 2010

  • It does not depend on the photolysis rate for the CFCs, only on the observed halogen loading and measured reaction rates.

    Archive 2010-01-01 EliRabett 2010

  • Oil floating at the ocean's surface has a limited lifespan - it's been collected and destroyed by skimming, booms, chemical dispersants, evaporation, photolysis, biodegradation - and took a beating from wind and waves when tropical depression Bonnie blew through over the weekend.

    Georgianne Nienaber: Flyover at the Macondo Wellhead: Damage Control at "The Source" 2010

  • Ozonolysis and photolysis of alkene-terminated self-assembled monolayers on quartz nanoparticles: implications for photochemical aging of organic aerosol particles, J. Park, A.L. Gomez, M.L. Walser, A. Lin, and S.A. Nizkorodov, Phys.

    Contributor: Maggie L. Walser 2010

  • It does not depend on the photolysis rate for the CFCs, only on the observed halogen loading and measured reaction rates.

    Commander Coincidence EliRabett 2010

  • In the stratosphere, the source gases are converted through photolysis and reaction with the hydroxyl radical to inorganic species of bromine, chlorine, and fluorine.

    Factors affecting arctic ozone variability in the Arctic 2009

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