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Action spectrum

Definition of the noun action spectrum

What does action spectrum mean as a name of something?

noun

  1. the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation
    • lexical domain: Natural Phenomena - nouns denoting natural phenomena
    • more generic word: spectrum = an ordered array of the components of an emission or wave

Explanation

Action spectrum: An action spectrum is the rate of a physiological activity plotted against wavelength of light. It shows which wavelength of light is most effectively used in a specific chemical reaction. Some reactants are able to use specific wavelengths of light more effectively to complete their reactions. For example, chlorophyll is much more efficient at using the red and blue spectrums of light to carry out photosynthesis. Therefore, the action spectrum graph would show spikes above the wavelengths representing the colors red and blue.

Printed dictionaries and other books with definitions for Action spectrum

Click on a title to look inside that book (if available):

Google previewDictionary of Biology (2014)

by Bill Indge

action spectrum Stimulation of the nerve cell causes the sodium ion-channel proteins to open Sodium ions enter and decrease the potential difference across the membrane The change in potential difference allows even more sodium ions to ...

Google previewThe Facts on File Dictionary of Biology (2009)

by Robert Hine, Daintith

action spectrum A graph showing the effect of different wavelengths of radiation, usually light, on a given process. It is often similar to ...

Google previewA Dictionary of Science (2010)

by Elizabeth A. Martin

action spectrum A graphical plot of the efficiency of electromagnetic radiation in producing a photochemical reaction against the wavelength of the radiation used. For example, the ...

Google previewThe Facts on File Dictionary of Organic Chemistry (2009)

by John Daintith

action spectrum A graph showing the effect of different wavelengths of radiation, usually light, on a given process. It is often similar to the ABSORPTION SPEC- TRUM of the substance that absorbs ...

Google previewThe Facts on File Dictionary of Botany (2002)

by Jill Bailey

action spectrum A graph showing the effect of different wavelengths of radiation, usually light, on a given process.

Google previewLewis' Dictionary of Occupational and Environmental Safety and Health (1999)

by Jeffrey Wayne Vincoli

action spectrum The spectral sensitivity curve for a given type of retinal photosensitive cell. actionable fraud Law. Deception practiced to induce another to part with property or surrender some legal ...

Google previewDictionary of Agronomy (1989)

by L. L. Somani

Action Spectrum. Graphic representation of the relative rates of photosynthesis in different wavelengths of light. Activated Carbon. A highly absorbent form of carbon, used to remove odors and toxic substances from gaseous emissions.

Google previewDictionary of Optometry and Visual Science (2014)

by Michel Millodot

action spectrum See spectrum, ...

Google previewThe Dictionary for Human Factors/Ergonomics (1992)

by James H. Stramler, Jr.

nerve impulse, spike action spectrum the spectral sensitivity curve for a given type of retinal photosensitive cell ...

Google previewEncyclopedia of Microbiology (2009)

During this stage, the biocontrol agent is confronted with several pathosystems to verify its action spectrum and under environmental conditions sufficiently diverse to guarantee a wide range of applicability. The high number of different ...

Google previewConcise Dictionary of Biomedicine and Molecular Biology (2001)

by Pei-Show Juo

Action Spectrum The extent of radiation of the different wavelengths on a chemical, biochemical, or physiological response. It is a plot of quantitative responses as a function of wavelength. Actiphenol (mol wt 275) A metabolic product found in ...

Google previewDekker Encyclopedia of Nanoscience and Nanotechnology (2004)

by James A. Schwarz, Cristian I. Contescu, Karol Putyera

and photocurrent action spectrum ( ). The inset shows the on-off response upon illumination at 400 nm. (From Ref. [54].) as a result of energy transfer quenching.

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