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Old August 21st 17, 08:15 PM posted to
Peter Duncanson
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Posts: 4,272
Default Watching an eclipse

On Mon, 21 Aug 2017 21:03:08 +0100, Scott

On Mon, 21 Aug 2017 20:16:09 +0100, Andy Burns

Scott wrote:

people were watching using special sunglasses. I though no sunglasses
were safe for looking directly at the sun?

special eclipse viewing filters aren't sunglasses.

Okay, but are they safe? I was taught as a child that NO device was
safe to look directly at the sun and the ONLY way to watch an eclipse
safely was via a pinhole projecting on to a sheet of paper.

Yes, they are safe.

The only safe way to look directly at the uneclipsed or partially
eclipsed sun is through special-purpose solar filters, such as
“eclipse glasses”

Peter Duncanson