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Diffraction

Diffraction

When a wave train passes an obstacle secondary waves are set up that interfere with the primary wave and give rise to bands of constructive and destructive interference. Around a point source of light, in consequence, is a series of concentric light and dark bands (coloured bands with white light), a diffraction pattern.


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Egg Yolk Coacervates & pH Imaging

... will make a microscope that would be comparable to what goes for almost $1000 on ebay because of phase contrast being added. I also have research diffraction grating and front surface mirror lenses to eliminate going through glass even. If it's possible to way outdo the $220 dollar 1600x without ...

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by GaryGaulin
Tue Mar 03, 2009 3:02 pm
 
Forum: General Discussion
Topic: Egg Yolk Coacervates & pH Imaging
Replies: 0
Views: 425

Re: X Ray crystallography & transmembrane proteins

... the bilayer. You can extract structural information from these kinds of assemblies, but usually it is low resolution information derived from diffraction experiments in an electron microscope, not from higher resolution x-rays; the resolution of 2D crystal structures used to be around 20-30 ...

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by blcr11
Fri Sep 05, 2008 11:43 am
 
Forum: Molecular Biology
Topic: X Ray crystallography & transmembrane proteins
Replies: 5
Views: 706

lipid optics

... aerated, etc.) does the solid water become opaque. So it seems that the transparent liquid to opaque solid transition in water is due to repeated diffraction and scattering, leading to reflection. The same thing has to be happening in the wax but I can't figure out molecularly how the phase would ...

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by dae
Wed Apr 09, 2008 2:51 am
 
Forum: General Discussion
Topic: lipid optics
Replies: 1
Views: 445

Help me guyz i m new in the bioinformatics field

?Why would you expect there to be such a relationship? The fiber diffraction pattern of DNA depends mostly on salt conditions and relative humidity. It isn't (at least so far as I know) dependent on the base composition.

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by blcr11
Mon Sep 24, 2007 1:13 pm
 
Forum: Bioinformatics
Topic: Help me guyz i m new in the bioinformatics field
Replies: 17
Views: 3257

what is the phase problem? x ray crystallography

In order to calculate electron densities from a diffraction experiment you need three pieces of information, only two of which can be determined directly by the experiment. Those three things are the indicies of a reflection (h,k,l), the intensity ...

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by blcr11
Sat Aug 25, 2007 6:26 pm
 
Forum: Bioinformatics
Topic: what is the phase problem? x ray crystallography
Replies: 4
Views: 4956
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