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Science

Jim__

(14,063 posts)

5. I don't believe the intended meaning of that paragraph is a contradiction of the previous statement.

Reply to Towlie (Reply #3)

Sun Aug 13, 2017, 02:10 PM

Aug 2017

It emphasizes the not in the question: How can you tell if your solar viewer is not safe?

My reading of that is: failing that test means your viewer is not safe, passing it does not guarantee that it is safe. If that is their intended meaning, they should clarify their statement.

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I have some questions about "counterfeit" eclipse viewing glasses. [View all] Towlie Aug 2017 OP

Amazon is giving me a refund freddyvh Aug 2017 #1

How can you tell if your solar viewer is not safe? GeorgeGist Aug 2017 #2

That article logically contradicts itself. Towlie Aug 2017 #3

I think the point is that even if glasses block out all visible light, they may pass UV light, which Nitram Aug 2017 #4

I don't believe the intended meaning of that paragraph is a contradiction of the previous statement. Jim__ Aug 2017 #5

Not sure I'd trust glasses, at all Warpy Aug 2017 #6

That's, what we're doing. Canoe52 Aug 2017 #7

Here's an article that talks about solar glasses certification and how to be safe: CaliforniaPeggy Aug 2017 #8