thelastestgunslinger
thelastestgunslinger t1_jcnlxvi wrote
Reply to comment by OpALbatross in Are Stasher Silicone Bags worth it? by OpALbatross
Whatever you already bought that’s the appropriate size.
thelastestgunslinger t1_j9ryud9 wrote
There’s a really interesting article about this on space.com
The really interesting thing is that special relativity (which is what says nothing can move faster than light) is about local spacetime, because it requires a local frame of reference. General relativity governs non-local references, and it’s indifferent to the speed of light.
> The notion of the absolute speed limit comes from special relativity, but who ever said that special relativity should apply to things on the other side of the universe? That's the domain of a more general theory. A theory like…general relativity.
It's true that in special relativity, nothing can move faster than light. But special relativity is a local law of physics. Or in other words, it's a law of local physics. That means that you will never, ever watch a rocket ship blast by your face faster than the speed of light. Local motion, local laws.
But a galaxy on the far side of the universe? That's the domain of general relativity, and general relativity says: who cares! That galaxy can have any speed it wants, as long as it stays way far away, and not up next to your face.
It goes deeper than this. Concepts like a well-defined "velocity" make sense only in local regions of space. You can only measure something's velocity and actually call it a "velocity" when it's nearby and when the rules of special relativity apply. Stuff super-duper far away, like the galaxies we're talking about it? If it's not close, it doesn't count as a “velocity” in the way that special relativity cares about.
Special relativity doesn't care about the speed — superluminal or otherwise — of a distant galaxy. And neither should you.
If I think about it too much i start to dislike it. But there it is (probably significantly oversimplified for laypeople).
thelastestgunslinger t1_j9mu22k wrote
Reply to comment by Jimstyx586 in Need a new backpack that will be almost exclusively for school(Uni) by Due_Vegetable_2023
Sounds like you should swap it.
thelastestgunslinger t1_j9mptyu wrote
Leather-bottom Jansport we’re all anybody needed when I was in school, back in the day. It’s probably enough now.
thelastestgunslinger t1_j3e0qgx wrote
Reply to comment by FrostyAcanthocephala in give me some of your favorite space facts by ChocolatePizza2121
r/unexpectedHGTTG
I hoped I’d find this here.
thelastestgunslinger t1_iyc79sk wrote
Reply to My mother passed away and my father told me to pay 3000 dollars for the W2 salary from my mother. by AlwaysNextGeneration
Your dad is financially abusing you. And the way you’ve written it will make out really hard for other people to tell.
Please think about what you want to know, and amend your post with an appropriate question.
thelastestgunslinger t1_ittqj3f wrote
Would weight be doable?
Weigh some thread at the right length. Add a scale to the machine that can weigh the spool.
thelastestgunslinger t1_jd9i5eb wrote
Reply to New research finds when small talk becomes awkward, we are more likely to blame ourselves by chrisdh79
It has literally never occurred to me too Place blame for small talk going awkwardly.