41
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 07 May 2026
41 points (100.0% liked)
Videos
18312 readers
97 users here now
For sharing interesting videos from around the Web!
Rules
- Videos only (aside from meta posts flagged with [META])
- Follow the global Mastodon.World rules and the Lemmy.World TOS while posting and commenting.
- Don't be a jerk
- No advertising
- No political videos, post those to !politicalvideos@lemmy.world instead.
- Avoid clickbait titles. (Tip: Use dearrow)
- Link directly to the video source and not for example an embedded video in an article or tracked sharing link.
- Duplicate posts may be removed
- AI generated content must be tagged with "[AI] …" ^Discussion^
Note: bans may apply to both !videos@lemmy.world and !politicalvideos@lemmy.world
founded 3 years ago
MODERATORS
I’m not an expert, but I think it has to do with AC vs DC electrification. With a DC third rail subway you can just feed it back into the lines no problem, but with AC you have to get the phase sync exactly correct or it will cause pretty serious problems. It’s the kind of thing that depends a lot on how old the system is, how energy distribution works, etc.
If there is an actual expert here I’d also like to know more..!
That makes a lot of sense.