YarHarSuperstar@lemmy.world to

Ask Lemmy@lemmy.world · 17 days ago

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

39

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

YarHarSuperstar@lemmy.world to

Ask Lemmy@lemmy.world · 17 days ago

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

Chat

DarkShaggy@lemmy.world
link
fedilink
arrow-up
60·
17 days ago
Most likely uv protective coating.
- Xaphanos@lemmy.world
  link
  fedilink
  arrow-up
  11·
  17 days ago
  Any coating might produce this through reflective destructive interference.
  - DarkShaggy@lemmy.world
    link
    fedilink
    arrow-up
    2·
    17 days ago
    True but where I live in CA this would likely be the coating selected by the majority of people.

Ask Lemmy@lemmy.world

asklemmy@lemmy.world

You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: [email protected]

A Fediverse community for open-ended, thought provoking questions

Please don’t post about US Politics. If you need to do this, try [email protected]

Rules: (interactive)

1) Be nice and; have fun

Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can’t say something nice, don’t say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them

2) All posts must end with a '?'

This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?

3) No spam

Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.

4) NSFW is okay, within reason

Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either [email protected] or [email protected]. NSFW comments should be restricted to posts tagged [NSFW].

5) This is not a support community.

It is not a place for ‘how do I?’, type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email [email protected]. For other questions check our partnered communities list, or use the search function.

Reminder: The terms of service apply here too.

Partnered Communities:

No Stupid Questions

You Should Know

Logo design credit goes to: tubbadu

Visibility: Public

This community can be federated to other instances and be posted/commented in by their users.

694 users / day
4.87K users / week
11K users / month
21.2K users / 6 months
267 local subscribers
27K subscribers
4.33K Posts
229K Comments
Modlog