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Ultraviolet c

ultraviolet C

ultraviolet radiation from 200 to 290 nm; uVC in sunlight does not reach the surface of the earth; germicidal and mercury arc lamps may cause sunburn and photokeratitis.

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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 pigment molecule, I think). In contrast, it seems unlikely that cells, which are small, could ever process radiowaves, which ...

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by wildfunguy
Sat Sep 29, 2012 10:46 pm
Forum: Cell Biology
Topic: receiving electromagnetism
Replies: 4
Views: 4679

Evolution and environment question--breathing, etc

With less ultraviolet light maybe it could be advantageous to lose pigments in our skin cells. That is something that can be genetically engineered.

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by OdinsRaven
Tue May 29, 2012 3:49 am
Forum: Evolution
Topic: Evolution and environment question--breathing, etc
Replies: 3
Views: 4570

Evolution and environment question--breathing, etc

... time in an environment which is slightly different from ours, here and there--perhaps a bit more nitrogen in the atmosphere, perhaps a bit less ultraviolet light to contend with. After that thousand years, they return to Earth looking and functioning with a notable difference in culture and ...

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by scifiwriter
Mon May 28, 2012 9:07 pm
Forum: Evolution
Topic: Evolution and environment question--breathing, etc
Replies: 3
Views: 4570

Theories - Origin of Life

... than it is now. This layer of ice, possibly hundreds of feet thick, might have protected fragile organic compounds in the water below from ultraviolet light and destruction from cosmic impacts. The cold might have also helped these molecules to survive longer, allowing key reactions to ...

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by einfopedia
Wed Mar 28, 2012 7:34 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1129373

Green mammals

... their main predators, birds and other insects, can see green. Most insects are sensitive to all colours except red and infrared, and can even see ultraviolet. A number of studies were cited by A. D. Imms FRS in his book 'Insect Natural History', however I haven't personally looked into these. ...

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by Squirrell
Tue Feb 21, 2012 9:39 pm
Forum: Zoology Discussion
Topic: Green mammals
Replies: 11
Views: 18487
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