madsci t1_iu75ti3 wrote on October 29, 2022 at 1:48 AM

Reply to comment by SpaceWanderer22 in A mobile makes sound travel faster than the speed of sound by Nicebruhh

Because of the speed of light. In fiber optics it moves at something like 70% of the speed it does in a vacuum.

Maybe someday we can use neutrinos for communication and not worry about having the Earth in the way.

SpaceWanderer22 t1_iu775i7 wrote on October 29, 2022 at 1:59 AM

Interesting discussion of neutrino communication: https://physics.stackexchange.com/questions/199606/is-neutrino-based-communication-possible

madsci t1_iu7ak1z wrote on October 29, 2022 at 2:28 AM

Interesting, thanks! That's really impressive. If they could get it to a reasonable size, 0.1 bits/second still has real value for a use case like nuclear submarines when you just need to say "fire ze missiles" or "surface and establish a high-bandwidth connection".

SpaceWanderer22 t1_iu7b3tx wrote on October 29, 2022 at 2:32 AM

That's a very good point. I had never thought about the difficulty of communicating with sub-- it makes sense that it's really hard though, with such a large volume of water. https://en.m.wikipedia.org/wiki/Communication_with_submarines