Probably bad for your hearing too
Probably bad for your hearing too
For reference, the loudest sound ever on earth was 180dB https://wikipedia.org/wiki/1883_eruption_of_Krakatoa
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The decibel scale is logarithmic, meaning that a 20,000 dB sound would carry an unimaginable amount of energy.
A hypothetical 20,000 dB sound would have an overpressure of approximately 5 x 10^499 atmospheres, enough energy to obliterate the Earth instantly.
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I just fucking KNEW that some nerd would turn up and explain that to me.
Ta.
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Nerds are cool and also literal antichrists. What an era!
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Just to put this insane pressure scale into context, the core of a neutron star is estimated to have a pressure of 1.6 x 10^34 pascals.
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1 atmosphere is 100 kPa, so you'll have to take 5 zeroes off, but when the magnitudes aren't even in the same magnitude, it doesn't really matter.
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Oh yeah? Then why didn't it destroy Gotham City? Checkmate.
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Same reason Batman survives injuries that would be fatal to a normal person and why the thugs he beats up never die: the DC universe is just built different.
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Prove it.
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20000 decibel, or 2 kilobel
yes, deci- is the si prefix for 1/10. the actual unit is the bel.
i am saddled with this cursed knowledge so now you must be too.
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Oh god how have I never realized this. You monster!
Also, it's crazy to me that we still use the normal metric prefixes for a logarithmic scale!
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it's like with earthquakes, the number is for the amount of zeroes
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That may actually explain the "Bell" enemies in Vintage Story. Noisy assholes.
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Wonder if they got hertz and decibels confused when they were writing that.
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Wouldn't that be a bit low? I haven't seen the show but I assume its something humans can't hear but tigers can. Although it is much more reasonable than the insane 20000 db they claim.
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Given that audio was going through changes from using physical denominators to using db as a standard, this might have confused them
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This means Adam West Batman is the most powerful.
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That's a very..alternative usage of the word "realistically" 😄
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More like "relativistically"
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My back-of-the-envelope calculation says this would result in about 2·10995 Pa of sonic pressure. I could be way off, but yeah... the creation of a black hole seems likely.
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Either you or the other guy is off by about 500 orders of magnitude.
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i mean, if batman only says decibels, we don't know the reference value; SPL was never specified.
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Good 'ol prep time
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So about half of my upstairs neighbors teaching elephants to tap dance at 3AM.
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It's a logarithmic scale.
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Why would it create a black hole?
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Matter energy equivalence, and the fact that decibels are a logarithmic scale. I found a reddit reply (I know, I know) that someone has done the math on, though I haven't checked if it's right. Anyway, it said:
20,000 decibels is 101997 watts, which is 101997 joules/second.
I think we can use P = p²/Z, where Z is 415 kg/m²s (impedance of air), to correlate our power P and the pressure p. So, p = sqrt(P/Z) which is still going to be on the order of 10^997 pascals.
The threshold we care about is 1032 pascals, which is the pressure at which neutrons overcome their "degeneracy pressure", a pressure which prevents them from being too tightly packed. So, yes, that could collapse matter into black holes for sure for sure, since we're beating it by 965 orders of magnitude. Also, the pressure inside the sun is roughly 1016 pascals.
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Because sound is waves. You can feel your chest pounding when you're standing next to a loud speaker during a live concert. Energy from a 20000dB "source" would create an unimaginable blast wave.
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Ngl, that’s a dope idea for a superweapon.
76 comments
For reference, the theoretical maximum of sound with air as medium is 196db.
at what dB does the air ignite from the vibration of molecules
edit: okay so air does not ignite, but allows other things to ignite, but methane is one of those things in air so I reformulate the question as such:
what pressure of air is needed to produce sufficient heat to ignite any methane trapped within it, and what dB level is needed to form such compression even if for mere nanoseconds?
Apparantly depends on the medium and the type of wave being measured in dB.
At that point it can’t be sound waves, but potentially shockwaves could start to heat the air up.
Eventually with high enough temperature you can get air to become plasma, any matter in the air might burn but the air itself will not.
-not a scientist
https://youtu.be/tONF9OSUOSw
So thats how !onehundredninetysix@lemmy.blahaj.zone was named
What happens to pressure waves above that? The air liquifies or plasmafies?
Evil Tim is summoned.