https://what-if.xkcd.com/73/ On Tue, 3 Jul 2018 at 12:53, Anthony via luv-talk <luv-talk@luv.asn.au> wrote:
It's also important to note that it's not only visible light that can harm, with lasers and other devices cable of generating wavelengths outside of the visible spectrum that nonetheless can damage the eye.
Where light sources aren't visible, the usual safety instincts may not kick in (which is why it's always important to wear suitable eye protection when dealing with devices such as lasers). Even where instincts do kick in, they're not foolproof.
On Tue, Jul 3, 2018 at 5:57 AM Lindsay W via luv-talk <luv-talk@luv.asn.au> wrote:
I am curios to find out why you wish to know this. The eye has a remarkable ability to recover from bright light source so to damage the retina enough to achieve total blindness one would need to look into a bright light source (such as an arc light at close range) for quite while, and this is likely to take a lot of will power. And believe me there is a distinct such an injury is VERY likely to be EXTREMELY painfull. DEFINITELY NOT RECOMMENDED.
Lindsay
----- Original message ----- From: "David Turk via luv-talk" <luv-talk@luv.asn.au> To: luv-talk@luv.asn.au Subject: [luv-talk] How many Lumens can blind you? Date: Tue, 03 Jul 2018 03:45:18 +1000
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