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What no one has seen before: gravitational waveforms from warp drive collapse

arxiv.org

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Re: What no one has seen before: gravitational waveforms from warp drive collapse

#101

Post by barfbagginus »

thriftwy wrote: post #42
perihelions wrote: post #10

Huh, so you can hear things explode in space, after all. If you're close enough to a warp field doing funny things, the gravitational wave strain would create audible-frequency artifacts, as it wiggles your eardrums at frequencies close enough to the audible. They derive an equation for estimated strain as a function of distance from the warp bubble collapse. How does strain translate to sound intensity, in the situa…

Imagine how much ridicule would a SF author in the XX century will get for suggesting his characters "hearing" FTL ships arriving into their solar system.

In the late 90s and early 00s you could totally have handwaved a hard SF scenario where gravitational waves from a Warp drive. Einstein calculated gravity Waves in 1911, and we saw the first evidence of them in the decay of a 1970s binary pulsar. Alcubierre published his warp spacetime in 94.

So there would have been room for hard SF space opera authors to sell the idea, like Stephen Baxter, Peter F Hamilton, or Alastair Reynolds.

Granted, it's amazing that now we can actually /simulate/ the sound of arriving warp ships! I imagine this will very quickly show up in short stories!

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#102

Post by worewood »

ben_w wrote: post #28
perihelions wrote: post #10

Huh, so you can hear things explode in space, after all. If you're close enough to a warp field doing funny things, the gravitational wave strain would create audible-frequency artifacts, as it wiggles your eardrums at frequencies close enough to the audible. They derive an equation for estimated strain as a function of distance from the warp bubble collapse. How does strain translate to sound intensity, in the situa…

One of the reasons I no longer ask questions on Physics stack exchange: 1. I asked "how powerful" such waves would have to be to be audible. 2. I directly linked to another question whose accepted answer said "these waves can wiggle your ear drum" 3. Got my question closed as a duplicate but the link was to different question that only asked "is it possible" (and accepted the answer "yes") without there being any ans…

Sometimes I like to go on StackExchange, find questions I'm deeply knowledgeable in and where people are saying things like "it can't be done" and reply with a code example doing the thing.

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#103

Post by belter »

rachofsunshine wrote: post #39
ben_w wrote: post #28

Earlier quoted context omitted.

One of the reasons I no longer ask questions on Physics stack exchange: 1. I asked "how powerful" such waves would have to be to be audible. 2. I directly linked to another question whose accepted answer said "these waves can wiggle your ear drum" 3. Got my question closed as a duplicate but the link was to different question that only asked "is it possible" (and accepted the answer "yes") without there being any ans…

I worked this out once! Gravitational waves obey the inverse-square law much like most radiation does (and subject to some constraints about weird spatial geometry, but most of their propagation is going on in open flat-ish space, so we can ignore that). GW150914, the first gravitational wave observed, had an amplitude of about 4 times 10^-22 [1], i.e., differences changed by a factor of about that. Typical sound dis…

> Totally worth being vaporized.

Agree. We should list of all kinds of similar endeavors. I volunteer to be dropped at PSR J0108-1431

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#104

Post by rakoo »

rachofsunshine wrote: post #39
ben_w wrote: post #28

Earlier quoted context omitted.

One of the reasons I no longer ask questions on Physics stack exchange: 1. I asked "how powerful" such waves would have to be to be audible. 2. I directly linked to another question whose accepted answer said "these waves can wiggle your ear drum" 3. Got my question closed as a duplicate but the link was to different question that only asked "is it possible" (and accepted the answer "yes") without there being any ans…

I worked this out once! Gravitational waves obey the inverse-square law much like most radiation does (and subject to some constraints about weird spatial geometry, but most of their propagation is going on in open flat-ish space, so we can ignore that). GW150914, the first gravitational wave observed, had an amplitude of about 4 times 10^-22 [1], i.e., differences changed by a factor of about that. Typical sound dis…

This is the minimum for the drum to move, but sound is also about a frequency no ? Do gravitaional waves have the right one ?

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#105

Post by ben_w »

worewood wrote: post #102
ben_w wrote: post #28

Earlier quoted context omitted.

One of the reasons I no longer ask questions on Physics stack exchange: 1. I asked "how powerful" such waves would have to be to be audible. 2. I directly linked to another question whose accepted answer said "these waves can wiggle your ear drum" 3. Got my question closed as a duplicate but the link was to different question that only asked "is it possible" (and accepted the answer "yes") without there being any ans…

Sometimes I like to go on StackExchange, find questions I'm deeply knowledgeable in and where people are saying things like "it can't be done" and reply with a code example doing the thing.

I find it deeply pleasing when I witness this in any domain. It's like watching a magic trick :)

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#106

Post by ElevenLathe »

marshray wrote: post #85
ElevenLathe wrote: post #20

Earlier quoted context omitted.

To be pedantic, the crystal is the rectifier in a crystal radio. Tuning was (or is, since there are still people out there playing with these things) still usually done via a normal tuned LC circuit. But yeah, we've gotten a lot better at rectifying too.

But we do use crystals for generating a stable frequency reference, which is then used in tuning.

That's not what is meant by "crystal radio".

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#108

Post by mort96 »

spankalee wrote: post #46
ben_w wrote: post #28

Earlier quoted context omitted.

One of the reasons I no longer ask questions on Physics stack exchange: 1. I asked "how powerful" such waves would have to be to be audible. 2. I directly linked to another question whose accepted answer said "these waves can wiggle your ear drum" 3. Got my question closed as a duplicate but the link was to different question that only asked "is it possible" (and accepted the answer "yes") without there being any ans…

Why would you ever consider asking an LLM a question like this though? They just make plausible-sounding things up, even if sometimes they're correct.

I think the point of the comparison with LLMs was to disparage StackExchange, I don't think they disagree with your view of LLMs

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#109

Post by bluGill »

addaon wrote: post #61
bluGill wrote: post #9

Earlier quoted context omitted.

Advanced life. There is no particular reason to think there is life out there (if there is or not - both are extraordinary). If there is, there is no particular reason it is advanced - vs just some plants and animals living a life but not doing anything different from the first members of the species. (that is not advancing to where they might get a house)

> There is no particular reason to think there is life out there (if there is or not - both are extraordinary) Well, no. One of those is ordinary (“commonplace or standard”). We just don’t know which.

At this point in time either would be extraordinary. If someone provides convincing proof either way tomorrow, then in 100 years that would be ordinary.

Re: What no one has seen before: gravitational waveforms from warp drive collapse

#110

Post by darkwater »

worewood wrote: post #102
ben_w wrote: post #28

Earlier quoted context omitted.

One of the reasons I no longer ask questions on Physics stack exchange: 1. I asked "how powerful" such waves would have to be to be audible. 2. I directly linked to another question whose accepted answer said "these waves can wiggle your ear drum" 3. Got my question closed as a duplicate but the link was to different question that only asked "is it possible" (and accepted the answer "yes") without there being any ans…

Sometimes I like to go on StackExchange, find questions I'm deeply knowledgeable in and where people are saying things like "it can't be done" and reply with a code example doing the thing.

I really don't understand how people can answer questions they are not 101% sure of the answer, on a public site like that. I mean, informal chat with a colleague? Sure. But to go on SO and do it, it's unthinkable for me.
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