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On 21-3-2015 10:14, Orchid Win7 v1 wrote:
> On 21/03/2015 08:10 AM, Thomas de Groot wrote:
>> DVD, floppies Warning: Bad for your eyes!! (no kidding)
>
> Yeah, pointing your eyes directly at the Sun is never a fantastic idea.
> Still, the number of times I've looked at the Sun with my naked eyes, I
> would think doing so with protection can't be any *worse*... The key, I
> guess, is to not stand there for eight minutes straight just staring at it.
It depends on the /protection/. DVDs are really bad protection because
they give the /illusion/ of screening sunlight which is not the case at all.
--
Thomas
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Le 2015-03-21 05:14, Orchid Win7 v1 a écrit :
> On 21/03/2015 08:10 AM, Thomas de Groot wrote:
>> DVD, floppies Warning: Bad for your eyes!! (no kidding)
>
> Yeah, pointing your eyes directly at the Sun is never a fantastic idea.
> Still, the number of times I've looked at the Sun with my naked eyes, I
> would think doing so with protection can't be any *worse*... The key, I
> guess, is to not stand there for eight minutes straight just staring at it.
when you look directly at the sky, you squint, you pupils contract and
can't look at it straight for 8 minutes, anyway.
When there's an eclipse, and you'r elooking through dark sunglasses,
floppies, DVDs, welding masks, etc, the lower level of ambient light and
the apparent darkness of the sun through the aforementioned spectacles
will not be enough to tell your brain to take evasive manoeuvres, so you
actually will burn your eyes with more UV rays than you would if you
were driving west at dusk, or skiing on a glacier in the Alps.
--
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/* @ */{P(0,a)P(a,b)P(b,c)P(2*a,2*b)P(2*b,b+c)P(b+c,<2,3>)
/* gmail.com */}camera{orthographic location<6,1.25,-6>look_at a }
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> When there's an eclipse, and you'r elooking through dark sunglasses,
> floppies, DVDs, welding masks, etc, the lower level of ambient light and
> the apparent darkness of the sun through the aforementioned spectacles
> will not be enough to tell your brain to take evasive manoeuvres, so you
> actually will burn your eyes with more UV rays than you would if you
> were driving west at dusk, or skiing on a glacier in the Alps.
Presumably a decent pair of dark sunglasses will have the required UV
protection?
Also, it seems relatively comfortable to look "near" the sun compared to
directly at it, but wouldn't both situations result in your eyes getting
burnt just as much?
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