this post was submitted on 20 Mar 2025
505 points (99.0% liked)
memes
13430 readers
3083 users here now
Community rules
1. Be civil
No trolling, bigotry or other insulting / annoying behaviour
2. No politics
This is non-politics community. For political memes please go to !politicalmemes@lemmy.world
3. No recent reposts
Check for reposts when posting a meme, you can only repost after 1 month
4. No bots
No bots without the express approval of the mods or the admins
5. No Spam/Ads
No advertisements or spam. This is an instance rule and the only way to live.
A collection of some classic Lemmy memes for your enjoyment
Sister communities
- !tenforward@lemmy.world : Star Trek memes, chat and shitposts
- !lemmyshitpost@lemmy.world : Lemmy Shitposts, anything and everything goes.
- !linuxmemes@lemmy.world : Linux themed memes
- !comicstrips@lemmy.world : for those who love comic stories.
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Whoops meant to say helped give us the telephone
Specifically was talking about this
"It was Alexander Graham Bell who patented the telephone in 1876. But Edison, with his knack for building upon others’ innovations, found a way to improve Bell’s transmitter, which was limited in how far apart phones could be by weak electrical current. Edison got the idea of using a battery to provide current on the phone line and to control its strength by using carbon to vary the resistance.
To do that, he designed a transmitter in which a small piece of lampblack (a black carbon made from soot) was placed behind the diaphragm. When someone spoke into the phone, the sound waves moved the diaphragm, and the pressure on the lampblack changed. Edison later replaced the lampblack with granules made from coal—a basic design that was used until the 1980s."
https://www.history.com/articles/thomas-edison-inventions