quantum yield of photosynthesis

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• quantum yield — (= quantum requirement) The number of photons required for the formation of one oxygen molecule in photosynthesis. Varies from 8 14 depending on the system used to measure it …   Dictionary of molecular biology

• Quantum evolution (alternative) — Quantum evolution is the hypothesis that genetic mutation can be adaptive, or directed through quantum effects.McFadden, Johnjoe (2000). [http://www.surrey.ac.uk/qe/quantumevolution.htm Quantum Evolution .] HarperCollins. ISBN 0 00 255948 X; ISBN …   Wikipedia

• photosynthesis — photosynthetic /foh teuh sin thet ik/, adj. photosynthetically, adv. /foh teuh sin theuh sis/, n. Biol., Biochem. (esp. in plants) the synthesis of complex organic materials, esp. carbohydrates, from carbon dioxide, water, and inorganic salts,… …   Universalium

• Quantum dot — Part of a series of articles on Nanomaterials Fullerenes …   Wikipedia

• quantum efficiency — noun also quantum yield : the ratio of the number of photoelectrons released in a photoelectric process to the number of radiation quanta absorbed * * * quantum efficiency noun In a photocell or in photosynthesis, the number of electrons released …   Useful english dictionary

• Photosynthesis — Composite image showing the global distribution of photosynthesis, including both oceanic phytoplankton and vegetation …   Wikipedia

• Quantum dot display — A quantum dot display is a type of display technology used in flat panel displays as an electronic visual display. Quantum dots (QD) or semiconductor nanocrystals are a form of light emitting technology and consist of nano scale crystals that can …   Wikipedia

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• photochemical reaction — Chemical reaction initiated by absorption of energy in the form of visible (light), ultraviolet, or infrared radiation. Primary photochemical processes occur as an immediate result, and secondary processes may follow. The most important example… …   Universalium

• Photochemistry — Photochemistry, a sub discipline of chemistry, is the study of chemical reactions that proceed with the absorption of light by atoms or molecules.[1]. Everyday examples include photosynthesis, the degradation of plastics and the formation of… …   Wikipedia

• enhancement effect — Property of higher plant photosynthesis, discovered by Robert Emerson. The quantum yield of red light (less than 680nm) and far red light (700nm), when shone simultaneously on a plant, is greater than the sum of the yields of the light of the two …   Dictionary of molecular biology