this post was submitted on 11 Dec 2023
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239
Light-Speed Spaceships Would Have Trouble Phoning Home (www.iflscience.com)
submitted 11 months ago* (last edited 11 months ago) by kalkulat to c/technology
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[–] [email protected] 24 points 11 months ago (2 children)

My first thought was 'no shit' as well. There's a horrible heartbreaking anime about that.. Voices of a Distant Star.

other forces ... can transmit information at speeds >c

I sadly disagree. Even if we figure out a way to instantaneously transport ourselves across the universe, there will be some shitty clause in fine-print that says we can't go back, or it took 0 time for us but 1 billion years for everything else.

Check out this video by Anton Petrov:

https://odysee.com/@whatdamath:8/woah!-someone-just-sent-an-impossible:4

[–] [email protected] 10 points 11 months ago (1 children)

or it took 0 time for us but 1 billion years for everything else.

That's just time travel with extra steps!

[–] xkforce 11 points 11 months ago (1 children)

It literally is time travel.

[–] [email protected] 3 points 11 months ago* (last edited 11 months ago)

We are all currently time-traveling at a ratio of (edit: roughly) 1:1

[–] [email protected] 3 points 11 months ago (2 children)

They're probably referring to quantum entanglement, which affects the entangled particles instantly.

[–] [email protected] 7 points 11 months ago (1 children)

Yeah but you can't interfere with quantum entangled particles, if you do you break the entanglement. So it isn't usable as a method of communication.

[–] [email protected] 1 points 11 months ago

It isn’t usable as a method of communication by any means we’re aware of.

[–] [email protected] 3 points 11 months ago (1 children)

Something I’ve not been asked to get through my head about QE: If observing the entangled particle destroys the entanglement, doesn’t that mean we’d need “containers” of entangled particles to send a bunch of information?

[–] [email protected] 3 points 11 months ago

You can't send information with entangled particles. You just learn the state of the other particle by inference when you observe the first particle.