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Aperture

Aperture

(Science: physics) The opening in an optical system which restricts the size of the bundle of rays incident on a given surface. (Usually circular and specified by diameter.)


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Please help us I.D. this micro-organism

... not exactly indicative of what dark field microscopy usually looks like.. What equipment are you using? What is the magnification and numerical aperture on the objective you're using? Third, you say you found an organism living in a human. Have you taken any steps to identify it's domain? Any ...

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by jyaron
Sun Aug 09, 2009 5:10 pm
 
Forum: Microbiology
Topic: Please help us I.D. this micro-organism
Replies: 4
Views: 170

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... structure (Bruner and Manzi, 2004). This pattern involves interorbital and orbital enlargement, widening and flattening of the nasal bones and aperture, maxillary development and upper rotation (Ibid). Keita (2004) found that European crania, relative to sub-Saharan African crania tend to have ...

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by bluecafe669
Tue Apr 15, 2008 12:50 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 18
Views: 12487

Benifits of Blue & Red: Action/Absorption Spectrum, etc

... do a variety of the following: mediate blue light-induced phototropism (circadian rhythms), chloroplast re-localization, opening of the stomatal aperture and stimulates proton pumps that drive protons out of the cells which starts off a whole set of reactions; electochemical gradients, osmosis ...

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by bta
Fri Jun 08, 2007 7:34 am
 
Forum: Botany Discussion
Topic: Benifits of Blue & Red: Action/Absorption Spectrum, etc
Replies: 4
Views: 3352

Microwaved Water

... Camera Model Name Canon EOS 10D Shooting Date/Time 3/9/2006 1:41:32 PM Shooting Mode Shutter Speed Priority AE Tv( Shutter Speed ) 1/200 Av( Aperture Value ) 4.0 Metering Mode Evaluative Now it is tn-IMG_2634.jpg, with no shooting info. (edited to add: the reason it had no shooting info was ...

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by xeric
Mon Apr 30, 2007 3:19 pm
 
Forum: Botany Discussion
Topic: Microwaved Water
Replies: 26
Views: 7838

The Fiber Disease

... is also in good agreement with the findings of Schempp [1986] that quantum holography is capable of modelling antennae such as synthetic aperture radars, and that this mathematical description of radar can be applied [Marcer and Schempp 1997] to a model, working by quantum holography, ...

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by Nadas Moksha
Mon Dec 11, 2006 1:03 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 748796
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