YarHarSuperstar@lemmy.world to

Ask Lemmy@lemmy.world · 2 days ago

Why is the sky purple in the reflection of my friend's glasses?

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Why is the sky purple in the reflection of my friend's glasses?

YarHarSuperstar@lemmy.world to

Ask Lemmy@lemmy.world · 2 days ago

They’re just regular (prescription) glasses. The sky looks normal through them. What’s the deal?

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Xaphanos@lemmy.world
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2 days ago
Any coating might produce this through reflective destructive interference.
- DarkShaggy@lemmy.world
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  True but where I live in CA this would likely be the coating selected by the majority of people.

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