Dictionary » P » Photodissociation




The dissociation or decomposition of a chemical compound by means of light energy or photons.


For example, the photodissociation of water molecule in photosynthesis occurred under the influence of light. When photons are absorbed, it causes the hydrogen to bind to an acceptor, subsequently releasing the oxygen.


See also: photosynthesis

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Re: How much CO2 in the early earth's atmosphere?

... of UV radiation), these organisms slowly turned CO2 into O2 which was able to turn into ozone(O3) when combined with single oxygen from the photodissociation of water from UV light. This slowly created an ozone layer which blocked the UV light so that plants could dominate the land as well ...

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by futurezoologist
Wed Feb 25, 2009 11:34 am
Forum: Evolution
Topic: How much CO2 in the early earth's atmosphere?
Replies: 2
Views: 7667

The Fiber Disease

... two modes along <111>. The striation results from fluctuation of growth condition. The origin of the preference to \111\ face is discussed.? Photodissociation of HNCO upon S_1<-S_0 excitation: the role of internal conversion and intersystem crossing Photochemistry of isocyanic acid, HNCO, ...

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by Nadas Moksha
Fri Dec 08, 2006 8:48 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6246452

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