You are correct, I should have said there was an atomic clock out the window that the walker looked out at.
- 0 Posts
- 19 Comments
Because of relativistic effects, from your point of view on the train you would just walk forward. But you would notice a strange effect while the trains were accelerating:
your atomically synchronized wristwatchthe clock you can see out the window has slowed down and stopped counting time. So it seems that your journey to the front of the train takes no time at all.From someone standing on the side of the tracks catching a glimpse of you and the train as you whizz by, the front of the train is moving at light speed. You’re at the back of the train completely frozen still, unable to move forward because the front of the train is moving away at light speed.
Weird things happen when you’re talking about the limits of physical reality.
Sound is air vibration
Sound is not exclusive to air, it can be generalized to vibrations in any media. Whale song and dolphin echolocation are certainly sounds, and we’re almost always talking about them propagating in water rather than air.
which has to travel from one place to the next
No, that isn’t how sound works. In air this would be a description of wind, not sound.
just transfer kinetic energy to the adjacenct atom
This is actually a good description of how sound waves propagate.
4z01235@lemmy.worldto
Open Source@lemmy.ml•WikiLambda, backend for Wikifunctions, rewrites itself from Node.js (!!) to Rust
7·1 year agosince it’s JIT, it’s actually faster than Python and Java in most cases.
Java is JIT’d too, and Python can be depending on which runtime you deploy.
Yup, the arugula/balsamic combo is the same way I’ve enjoyed pear pizza. Delicious.
Pear works well on white pizza
4z01235@lemmy.worldto
Open Source@lemmy.ml•RPN Calculator (Reverse Polish Notation) for Android.
3·1 year agoWhat has changed about RPN or calculators in the past year?
4z01235@lemmy.worldto
Today I Learned@lemmy.world•TIL Guinness World Records and Ripley Entertainment (Ripley’s Believe It Or Not!) are owned by the same conglomerate based in Vancouver, BC.English
8·1 year agoSomewhat similar to Michelin Stars for restaurants, and Michelin the tire brand. The tire company started curating the list of notable restaurants to visit as a way to encourage people to drive more.
4z01235@lemmy.worldto
Linux@lemmy.ml•So, Fedora 40 is out, any guess as to when we can expect Nobara 40?
7·2 years agoYou can check the release notes to be sure, but generally you can just perform the update and move on with life. Backing up your data is always a smart precaution.
“We” haven’t moved anywhere, I just chimed in for the first time with my interpretation of what the other person was talking about. Jeez.
GitHub is a git hosting provider, but it also has its own service software for all the peripherals - organizations, issues, pull requests, all the user account management stuff, etc. AFAIK those parts are mostly/all proprietary.
Generate the binaries during test execution from known (version controlled) inputs, plaintext files and things. Don’t check binaries into source control, especially not intentionally corrupt ones that other maintainers and observers don’t know what they may contain.
You can use it for normal applications that aren’t sort of “system components” like a VPN. So if you want to install some office/productivity software, or a web browser, or a music/video player, then a Flatpak would be a reasonable choice. For most of those cases you would probably still choose the RPM if it is available, but Flatpak is also fine if not.
4z01235@lemmy.worldto
Asklemmy@lemmy.ml•What's something you wish would "come back" but you feel like you're the only one that cares?
191·2 years agoI know I’m not the only one but I’ll say it anyway:
Altoids Sours.
The idea of a emoji is to sound more human, that’s why Ai chat bots use them at the end of their answers, to sound more human and more friendly
This is how you feel about it, but you’re posting in a place full of humans who don’t communicate that way. It’s fine that you like to, but you won’t have much luck appealing to a community by calling their norms less-human and unfriendly.
4z01235@lemmy.worldto
Asklemmy@lemmy.ml•Why isn't everyone talking about AI generated audiobooks?
3·2 years agoWhich leads me to wonder when it will be standard procedure for cameras to digitally sign their footage.
The first stills camera that digitally signs its photos is here. Leica is part of a tech consortium developing this as a standard and other major photography brands are also members, so hopefully this catches on and becomes standard, and expands to video.
4z01235@lemmy.worldto
Asklemmy@lemmy.ml•How to I batch convert .CR2 (raw) photos to JPEG?
4·2 years agoExample? They gave you the exact thing to run.

Haiku comes to mind