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Old 09-02-2011, 09:03 AM #1
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Default 445 vs. skin



These guys are stupid. I've heard that since the wavelength of 445s are closer to the UV side of the spectrum, repeated exposure carries somewhat of a cancer risk. Is this true?



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Old 09-02-2011, 01:41 PM #2
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Default Re: 445 vs. skin

Don't be afraid of the "search" button Confirmation of cancer causing properties for 445nm please
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Old 09-02-2011, 04:21 PM #3
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Default Re: 445 vs. skin

Hey, at least that guy was wearing his goggles.
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Old 09-15-2011, 02:47 AM #4
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Default Re: 445 vs. skin

Nope.
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Old 10-05-2011, 05:12 PM #5
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Default Re: 445 vs. skin

Would it work on a white person? Since black people are darker and all? lol jk jk
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Old 10-05-2011, 05:40 PM #6
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Default Re: 445 vs. skin

Quote:
Originally Posted by 447767 View Post
Would it work on a white person? Since black people are darker and all? lol jk jk
and the necroposter with useless information strikes again
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Old 10-05-2011, 11:51 PM #7
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Default Re: 445 vs. skin

Oh drat, that video again!

And yes, it will work -better- on a person with dark/black skin, but even if you're caucasian putting your fingers in harms way of a 445/1watt beam will be painful.
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Old 10-06-2011, 02:53 AM #8
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Default Re: 445 vs. skin

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Originally Posted by bennett326 View Post
and the necroposter with useless information strikes again
It was a question not information?? 0.o lol and yeah I wasn't sure if it would really do much if your white, I mean that guy was kinda dark lol I wonder how long it would take to burn into white skin.
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Old 10-06-2011, 03:42 AM #9
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Default Re: 445 vs. skin

Immediately painful.
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Old 10-06-2011, 05:36 PM #10
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Default Re: 445 vs. skin

So far it hasn't caused me any real burns though - working with about 1 watt focussed for infinity. Getting a finger in the beam does feel painfully hot, but its not so bad that reflexes are too slow to retract it before you get a nasty burn.

Best thing to do is to minimize the power when you're working on dichro's, prisms and mirrors in the beam path. The downside of doing all that with goggles on is that you are hardly able to see the beam in the air - especially with unwanted stray and reflections around.
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