[TheForge] Re: Subject: Didymium? I say "no way."

[Mike Porter]

Trister,
Oh yes, we are talking about damage from "thermal energy." Whatever part of 
the eye a particular light wave is absorbed in, it creates thermal energy 
there. When enough energy is deposited to overcome the eye's cooling 
mechanisms, damage ensues. Our bodies repair that damage for the most part, 
but not always and usually not completely. When enough damage collects, or 
if the injury is traumatic enough, various medical terms describe what part 
of the eye and how bad the damage. It all has one thing in common: loss of 
visual performance. You can look up the grizzly details easily on the Net, 
starting with cataracts. I'm not going into them because it was never my 
intent to drift this far into safety discussions which, believe it or not, 
are no more popular with me than anyone else.
Mike Porter

----- Original Message ----- 
From: <TristerK at aol.com>
To: <theforge at mailman.qth.net>
Sent: Friday, February 10, 2006 1:54 PM
Subject: Re: [TheForge] Re: Subject: Didymium? I say "no way."


> Hmmm, food for thought. I want to be clear that I am not argueing with 
> you,
> I'm just looking for information, don't have an opinion one way or the 
> other.
> One more question -
>
> What does IR damage look like? I think it's obvious that we are not 
> talking
> about an actual burn from thermal energy, so what are we talking about in 
> terms
> of damage?
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