Ask Lemmy

27049 readers

1543 users here now

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:

Logo design credit goes to: tubbadu

founded 1 year ago

MODERATORS

[email protected]

141

What topic do you LOVE to talk about, but rarely get to? (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

238 comments fedilink hide all child comments

Everyone has something they can't stop themselves from nerding out over - but often it's hard to find people to talk to about it. So go ahead, share your interests, and tell us about them!

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 5 points 1 year ago (1 children)

My mind was blown when I learned that a difference of just a few centimeters in height is enough to detect time dilation. I always thought the effect was so subtle that it could only be detected on a galactic scale, but it turns out we deal with it every day!

It's so weird to think about, time is one of the few "constants" we have in life, but it's really not so solid.

[–] [email protected] 2 points 1 year ago (1 children)

a difference of just a few centimeters in height is enough to detect time dilation

I'm sorry, what?

[–] [email protected] 1 points 1 year ago

https://youtu.be/hzLTgtFaPLY?si=QOJa4sQJ6Aqijhjn

You can skip to about 3 minutes for the relevant experiment, it's wild. They also talk about the GPS stuff in that video.