Ask Lemmy@lemmy.world · 1 year ago

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

lemmy.world

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

lemmy.world

YarHarSuperstar@lemmy.world to

Ask Lemmy@lemmy.world · 1 year ago

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

Chat

ABCDE@lemmy.world
link
fedilink
arrow-up
2·
1 year ago
It’s standard to have UV protection.

Ask Lemmy@lemmy.world

asklemmy@lemmy.world

Create a post

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: !asklemmy@lemmy.world

A Fediverse community for open-ended, thought provoking questions

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 !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com. 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 info@lemmy.world. For other questions check our partnered communities list, or use the search function.

6) No US Politics.

Please don’t post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !askusa@discuss.online

Reminder: The terms of service apply here too.

Partnered Communities:

Logo design credit goes to: tubbadu

Visibility: Public

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

327 users / day
375 users / week
642 users / month
66 users / 6 months
0 local subscribers
27.5K subscribers
1.41K Posts
19.5K Comments
Modlog