this post was submitted on 07 Dec 2023
652 points (99.5% liked)

Technology

58137 readers
4508 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each another!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed

Approved Bots


founded 1 year ago
MODERATORS
 

Speedy thing goes in, speedy thing comes out.

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 6 points 9 months ago (2 children)

optical fiber speed record

Isn't that simply the speed of light, always? ;-)

[–] [email protected] 12 points 9 months ago (1 children)

Nope, if we are talking about the actual speed of the signal optical fiber is relatively slow at ~1/3 c, compared to air or copper where it's almost c. They're using 'speed' meaning bandwidth. A van full of sd cards would have a massive bandwidth, but a very slow actual speed

[–] [email protected] 12 points 9 months ago* (last edited 9 months ago) (1 children)

Actually it's about 2/3 c, the refractive index of normal telco fibers (G.652 and G.655) is around 1.47

[–] [email protected] 3 points 9 months ago

Cool information, thanks!

[–] [email protected] 5 points 9 months ago (1 children)

It is pretty confusing that we refer to the volume of data as speed in networks.

[–] [email protected] 16 points 9 months ago

We don't. The measure is bits/s, which is a speed because it's measured relative to time. 1 TB is a volume/amount, 1TB/s is a speed.