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Scattering

scattering

(Science: radiobiology) The deflection of one particle as a result of collisions with other particles or with waves.

See: elastic.


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Re: Why are leaves green?

... the light of competitors, and many seedlings in the forest don't make it for lack of light. Every photon is precious in the struggle for life. The scattering/sharing argument is just not the way biology works. Evolution creates very selfish beings. I don't think ants or humans are an exception, ...

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by stauffie
Fri Apr 06, 2012 2:00 pm
 
Forum: Botany Discussion
Topic: Why are leaves green?
Replies: 76
Views: 297510

Why are leaves green?

... ability to adjust to high light intensities by synthesis of antosianin would be destroyed. As antosianin absorbs green light reducing green light scattering. As a side note, shade plants do absorb green light by use of their long intercelluler spaces deflecting green light till some of the enery ...

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by Marnitz
Sat Jun 11, 2011 2:45 pm
 
Forum: Botany Discussion
Topic: Why are leaves green?
Replies: 76
Views: 297510

Re:

... when you measure concentration of molecules in solutions, like DNA (260nm) or proteins or pigment. But for particles like bacteria, it is just the scattering of the light (% transmission) that is measured, so the wave length is not really important as long as the blank is correct.

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by canalon
Mon Dec 13, 2010 4:44 pm
 
Forum: Cell Biology
Topic: Measuring OD
Replies: 5
Views: 4593

Measuring OD

... not matter at all. When you are measuring cell density with a spectrophotometer, you are not really measuring the absorption of light, but its scattering by the particles (cells). And it is the same at any wavelength. The only thing that you might want to recheck is the equivalence OD=number ...

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by canalon
Fri Dec 10, 2010 4:11 pm
 
Forum: Cell Biology
Topic: Measuring OD
Replies: 5
Views: 4593

Re: Generation of DNA nucleotides

... http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html The end result of diffusion is a scattering of molecules. How does that drive the appropriate nucleotide to where it's needed? And what exactly is "thermally-driven shaking and ...

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by gs99
Fri Jan 15, 2010 4:33 pm
 
Forum: Molecular Biology
Topic: Generation of DNA nucleotides
Replies: 65
Views: 59172
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