/sci/ - Science & Math

[Anonymous No.11909443]

do gravitational waves have the potential for communication/data transfer?

[Anonymous No.11909452]

technically, at massive cost and difficulty. but they don't propagate any faster or further than radio waves so what's the point?

[Anonymous No.11909456]

>>11909443
Yes it is possible, you just need to move incredibly massive objects back and forth really fast to transmit, and every reciever has to be basically LIGO. As >>11909452 said it would be utterly pointless as gravitational waves don't propogate any faster than radio, so why not just use radio?

[Anonymous No.11909457]

>>11909452
couldnt they travel faster than the speed of light because its just the warping of space?

[Anonymous No.11909469]

>>11909457
sure, if you kiss a magic rainbow pony

[Anonymous No.11909849]

>>11909452
>but they don't propagate any faster or further than radio waves so what's the point?
More manageable interference over sufficiently large distances. But this might only ever be relevant if the species doesn't go extinct here on Earth.

[Anonymous No.11909859]

>>11909456
>you just need to move incredibly massive objects back and forth really fast to transmit
so like when i'm fucking yo momma's tiddies?

but more seriously, maybe gravity waves don't get shielded as easily as em?

[Anonymous No.11909878]

>>11909452
They can go through the earth unlike radiowaves.

[Anonymous No.11909894]

>>11909452
You can easily shield off radio, but gravity penetrates everything. Only other sources of gravity can "shield" it.

[Anonymous No.11909935]

>>11909894
Yeah if you waggle a whole fucking planet back and forth then that shit will basically be unstoppable. But building a million km long antenna and pumping a few TW into it would actually be way easier and would be just as absurdly unstoppable.

[Anonymous No.11909958]

>>11909935
There are huge balls of plasma in space...

[Anonymous No.11909967]

>>11909456
>gravitational waves don't propogate any faster than radio, so why not just use radio
The difference is gravity waves have a near infinite range.

[Anonymous No.11909973]

>>11909443
Consider that the most precise detector is only barely able to pick up the most massive collisions known to science.
Technically you could do it, but you'd need to be able to smash neutron stars and black holes in morse code.
In the case of neutron star on neutron star collisions you effectively sterilize entire portions of a galaxy.

[Anonymous No.11909983]

>>11909958
Your point? Those balls of plasma have enormous gravity wells too.

>>11909967
The same goes for electromagnetic waves...

[Anonymous No.11910012]

>>11909983
>The same goes for electromagnetic waves
Technically yes. The question is what kind of loss do you have. After a certain distance radio broadcasts are going to become garbled just because of destructive interference and diffraction from dust and gas and all the other noisy EM emitting shits.
If you want to broadcast on galactic ranges without repeaters set up then you're going to need very high energy parts of the spectrum which means blasting x and gamma rays across space and hoping Romulax VIII isn't taking the kids to space disney that weekend and wandering head first into your artificial GRB.
Theoretically gravity waves would work but you're having to goof off with retardedly huge energy requirements or sensors so precise that it could detect a mouse farting on the moon.

[Anonymous No.11910087]

>>11909983
>Those balls of plasma have enormous gravity wells too.
They don't wiggle around as much as the source of the gravitational wave. They are approximately constant and won't change the signal. Very much unlike EM waves hitting the vicinity of such a ball.

[Anonymous No.11910260]

Would this be useful for time travel and propagating brain waves into the past?

[Anonymous No.11910393]

Is there some sort of quantum limit to the sensitivity of LIGO-like gravitational wave observatories?

This seems interesting
https://wikipedia.org/wiki/Pulsar_timing_array

If you've resorted to gravitational wave, imagine what messages necessitate communication over these immense time scales.

[Anonymous No.11910429]

>>11910393
i wish we could get some instruments up close to check reality-bending things like the crab pulsar out. that shit just has to be wild

[Anonymous No.11910445]

>>11910393
PTA would be pretty neat. If you could get it to work with sensitive enough instruments you could potentially measure the cosmic gravity background radiation of the universe which would wind the clock back to almost 0 instead of the recombination like the CMB.

[Anonymous No.11910632]

>>11909456
This, but in theory you can densify the gravity waves to propagate matter forward faster than light and "courier pigeon" your way to data transmission speed using an alcubierre drive.

[Anonymous No.11910717]

>>11910632
>in theory you can densify the gravity waves to propagate matter forward faster than light
No.

[Anonymous No.11910762]

>>11910717
With enough energy you could bend gravity around the ship, thus allowing for faster motion than light in a given direction, the gravity is denser along the edges, like a black hole.

https://www.youtube.com/watch?v=BgCmotgySdU

[Anonymous No.11910977]

>>11910762
No, you would need exotic matter for that, which doesn't exist, or an infinitely long cylinder, which doesn't exist.

[Anonymous No.11910993]

>>11910977
>or an infinitely long cylinder, which doesn't exist.
Oh yeah? Check this out. *unzips dick*

[Anonymous No.11911184]

>>11910977
Why would you need exotic matter as fuel?
You could generate the same power through uranium and spin, albeit temporarily.
>inb4 space drill
Yes. A literal space drill.

[Anonymous No.11911317]

>>11910993
It shouldn't be infinitely thin though, sorry.

>>11911184
You can only achieve the (apparent) faster-than-light carry effect if the energy density of the field causing the "drillage" is lower than the energy density of the vaccum. In other words, it must have negative mass. Otherwise you can't "drill" it.

[Anonymous No.11911410]

>>11909457
you may be thinking of gravitational wave group velocity. yes the phase velocity can go ftl, but you still can't transmit info ftl :/

[Anonymous No.11911469]

Information can’t go faster then the speed of light. Radios already transmit at speed of light. It’s a Pointless thing to do.

[Anonymous No.11911501]

>>11909443
“gravity” is just non-coherent magnetism not its own force

[Anonymous No.11911515]

>>11911469
if in the distant future a neutrino transceiver could be built, there would be a lot of applications that it would be better suited for than em for extremely long range communications

[Anonymous No.11911840]

>>11910977
>or an infinitely long cylinder, which doesn't exist.
I got one
IN MY PANTS if you know what I mean

[Anonymous No.11912152]

>>11911840
I don't.