alt Hacker News> people think each person needs a pair, not aware that you're not going to stare at the thing the whole time, and sharing is possible
We had like 60 seconds of totality, sharing the glasses with my wife would mean we get 30 seconds each. Of course both of us want double the viewing time and the glasses are a couple of euros.
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dudefeliciano • today at 9:07 AM
In Berlin for example all shops ran out of eclipse viewing glasses, people were selling them on eBay & co. at 15 -35 euros a pair…
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The period of totality is the only phase when you do not need to use protective eyewear. You would be able to safely look directly at the eclipsed Sun, as long as your timing is precise.
https://eclipse.aas.org/eye-safety
It's during the partial/annular/penumbral phases when you use the protective eyewear, and those are lasting a couple of hours on each side.
But even protected viewing should be curtailed to a couple of minutes at a time.