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Old 01-22-2010, 02:51 PM #17
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Default Re: Diffuse reflection of a 5mW dangerours?

Well, if you put that much attention to the W, you'd better notice that you're not writing mW, the milliwats that are 1000x times smaller and more common.


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Old 01-22-2010, 04:44 PM #18
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Talking Re: Diffuse reflection of a 5mW dangerours?

Quote:
Originally Posted by 3zuli View Post
btw, are there any researches of how much mW's can blow cat's eye's retina? or any plots of cat's eye optical sensitivity vs. wavelength?
Some technical data (not easy): http://www.jneurosci.org/cgi/reprint/13/4/1543.pdf

Basically, they have less "color depth" than us, and some of the colors that we see, they see them as black and white ..... but their eyes are, usually, from 5 to 10 times more sensitive than ours to the light levels (in normal conditions), more sensitive to the high frequency flickering, and also to the very quick movements (just as example, move a point light source quickly, until you start to lost all the details and see it just as a line ..... at the same speed the cat still see clearly the moving light point with the details, instead a confused line)

Their retina have a bit more possibility to become damaged from high intensity lasers, due to their sensitivity, but at the same time, their iris is more quick than our one in the reaction, so an accidental reflex have less possibility to cause a damage ..... just don't point the beam straight at their eyes, and their reaction take care abut the floor reflex .....

I played so much times with cats and dogs, especially cats, with a keychain pointer ..... sometimes, cats are like crazy, when they chase the point (but i suppose that is not just for the light ..... in the cat brain, individuation of a target is a "combination affair" between sights, odors and noises ..... a point of light running around, for a cat, probably is something like an alien for us .... his eyes say it that there's something running around, and contemporarily, his nose and ears say it that there's nothing ..... add this with the natural overdeveloped curiosity sense of the most part of the cats, and their semiautomatic predator reflex ..... )
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Old 01-22-2010, 08:12 PM #19
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Default Re: Diffuse reflection of a 5mW dangerours?

What an insight!
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Old 02-13-2010, 06:47 AM #20
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Default Re: Diffuse reflection of a 5mW dangerours?

HIMNL9... Were you once part cat? -lol
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