I have the same question. I ordered some from Amazon for my kids. I hope this article means that they were carefully verified by Amazon, but it has still made me uneasy about using them. Just knowing fakes are common is really concerning.
Assuming you got paper glasses, on the inside of the arms of the glasses should be information about the ISO certifications and who manufactured it. Compare this against NASA's approved manufacturer list. If there's no info or they're not on the list, don't risk using them.
It's weird but I've got a co-worker who bought some cheap Chinese ones and actually block more light from a phone's flash LED than my legit, approved pair. I'd still never use them since my test is very simple and I don't understand enough about the properties that make for good solar filters.
Don't risk it. I've got some extras I ordered directly from one of the NASA-endorsed suppliers. E-mail me your mailing address and I'll send you some. My e-mail is (also in the profile, but doesn't seem to be visible; maybe my karma's too low?) [HN user name] at x0.ms.
obsurveyor|8 years ago
It's weird but I've got a co-worker who bought some cheap Chinese ones and actually block more light from a phone's flash LED than my legit, approved pair. I'd still never use them since my test is very simple and I don't understand enough about the properties that make for good solar filters.
tantalor|8 years ago
unknown|8 years ago
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TAeGTrVNmP|8 years ago
bjl|8 years ago
unknown|8 years ago
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