Dictionary » D » Dispersion



(Science: microscopy) The variation of refractive index with colour (or wave-length) of light. The spreading of white light into its component colours when passing through a glass prism is due to dispersion which, in turn, is due to the fact that the refractive index of transparent substances is lower for long wavelengths than for-short wavelengths. A measure of dispersion is defined as: nd - 1 v= nf-nC where nd = refractlve index at 589 nm (yellow), nf = 486 nm (blue), nC = 656 nm (red). The act of dispersing or diffusing something; the dispersion of the troops; the diffusion of knowledge.

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Bordetella pertussis

... and most of the work is under the hood (except for centrifugation and spectrophotometry). But then, I need to take a small quantity of cell dispersion and carry it through the lab on a glass slide for microscopy. Is there any possibility that bacteria go into air or otherwise endanger me? ...

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by SpellForce
Thu Nov 27, 2014 9:07 pm
Forum: Microbiology
Topic: Bordetella pertussis
Replies: 0
Views: 522

Is DNA living or non-living thing?? get the answer here

... Particle YOK. Mass forms below some value of the above D. 3. Galactic clusters formed by conglomeration? Galactic clusters formed by Big-Bang's dispersion, evidenced by their Newtonian behaviour including expansion acceleration. 4. The universe expansion is fueled by the mass-to-enrgy reconversion. ...

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by Dov Henis
Thu Nov 24, 2011 3:27 pm
Forum: Molecular Biology
Topic: Is DNA living or non-living thing?? get the answer here
Replies: 26
Views: 73941

Re: Membrane fluidity

... temperature, composition. Example for degree of saturation. And presence of membrane carbohydrates and proteins. This is affect of the dispersion forces.

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by samastemarch
Fri Jun 18, 2010 9:04 am
Forum: Cell Biology
Topic: Membrane fluidity
Replies: 3
Views: 29484

Membrane fluidity

... (i.e. degree of saturation) and presence of membrane proteins/carbohydrates? Not sure about the last one, but wouldn't that affect the dispersion forces between phospholipids?

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by dawn1070
Wed Jun 16, 2010 6:38 am
Forum: Cell Biology
Topic: Membrane fluidity
Replies: 3
Views: 29484

Energy from fatty acids?

... than carb/prot? 3)I know that saturated fatty acids contain more energy than unsaturated but why though?is it because of they have more London dispersion forces? thnx alot..a answer to at least one question is greatly appreciated.

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by abiran
Mon Dec 21, 2009 4:29 pm
Forum: Cell Biology
Topic: Energy from fatty acids?
Replies: 10
Views: 6451
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