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Eclipse August 21, 2017

vesper said:
thank you. With a really good pair of sunglasses I hope.
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The totality is viewed without eye protection. If you try seeing totality with sunglasses on, you'll miss it.

On the other hand, sunglasses are not nearly enough protection for the partial. You need dedicated eclipse glasses for that. Or thick enough welding glass.
 
Deuce said:
There's still a ton of IR that comes through, and that's what starts frying your eyes. Only you don't realize it's happening because it's outside your eyes' frequency range. Light you can't see can cause permanent damage. People stare for minutes at a time at it. Normal sunlight, the pain forces you to look away immediately.

Don't look directly at it without protection. At all. Not even "during full occlusion." Sunglasses aren't nearly sufficient. Don't look through a lens that isn't filtered with something specifically intended for this operation, the concentration will burn out your eyes even faster.

The "safe" window for direct viewing is small.
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What do you mean by full occlusion? It was safe to look directly at the eclipse during the two+ minutes of totality.
 
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