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Visible light

visible light

(Science: physics) electromagnetic radiation with wavelengths between 400 nanometres and 750 nanometres. Electromagnetic radiation within this range can be detected by the human eye. Colours depend on the wavelength lengths, a short wavelength (the 400 nm side) looks blue and a long wavelength (the 750 nm side) looks red. (physics) electromagnetic radiation that can produce a visual sensation; the light was filtered through a soft glass window.

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Photosynthesis Experiment - Do LED's work?

... 675 nm wavelengths. 450 nm represents the most purple of hues in the visible spectrum, whilst 675 nm manifests itself as a reddish-orange. If you are utilizing an LED then the light intensity is dependant upon the current. Evidently, Vaucheria's post would suggest ...

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by Coelacanth
Sun Oct 13, 2013 6:33 am
Forum: Botany Discussion
Topic: Photosynthesis Experiment - Do LED's work?
Replies: 8
Views: 6946

Extra Light For Compound Light Microscope ???

"Compound Light Microscope : This microscope uses visible light for illuminating the object . it contains glass lenses that magnify the image of the object and ...

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by Kehsibashok
Sun Jul 28, 2013 6:12 am
Forum: Cell Biology
Topic: Extra Light For Compound Light Microscope ???
Replies: 1
Views: 1387

receiving electromagnetism

I know that, in addition to our eyes, which can process visible light, there are some bird eyes that can process the smaller, ultraviolet waves (because of an extra ...

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by wildfunguy
Sat Sep 29, 2012 10:46 pm
Forum: Cell Biology
Topic: receiving electromagnetism
Replies: 4
Views: 3648

Cone snail

... but the "tail" is hard, barbed and crescent-shaped and not visible unless the animal lashes out. The animal also used it to turn itself ... snails don't have anything as complex, right? Just long stalks with light-sensing knobs at the end?

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by biohazard
Tue Jun 05, 2012 9:47 am
Forum: Zoology Discussion
Topic: Cone snail
Replies: 4
Views: 4847

brown substance without UV/VIS spectra

... the spectrum is exactly the same with two maxima in UV, but nothing in visible part of spectrum. I was thinking about some impurities or mechanical particles, but all that should absorb (or diffuse) the light, right? What about particle size? But the solution is brown as well. And ...

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by JackBean
Fri Feb 03, 2012 5:44 pm
Forum: General Discussion
Topic: brown substance without UV/VIS spectra
Replies: 0
Views: 797
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