For reference, the theoretical maximum of sound with air as medium is 196db.
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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.
And definitely scare off the tigers
I just fucking KNEW that some nerd would turn up and explain that to me.
Ta.
Oh yeah? Then why didn't it destroy Gotham City? Checkmate.
You won't hear it coming
Amazingly, given the relatively slow speed of sound, you might actually see it coming. For a moment or two at least, before you're vaporized or whatever.
Hmm. It wouldn't stay sound for long. The molecules would be banging together so hard that you'd get all sorts of interesting nuclear reactions. I'm not guessing how that turns out. But, for sure, you'd get a lot of EM radiation coming at you at the speed of light.
ETA: Come to think of it. You'd also get unknown gravitational phenomena, also travelling at the speed of light. Presumably. The data would be invaluable for unifying relativity and quantum physics. Definitely dead before you know, though.
Yeah, I was just thinking of like an extremely powerful soundwave, but I guess I just can't really imagine what a blast of that magnitude would look/behave like.
No worries. No one can. Everything we can observe is perfectly explained either by relativity or quantum physics, but never both. They are incompatible theories, which are applied in different conditions. In such extreme conditions, both would apply. IE, we don't have a theory for it.
Since we cannot create anything remotely close to such conditions, like a black hole, we do not have the data to create such a theory. Just like AI, we are limited by our training data.
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.
Are you a fellow PAG/NAG calculator, too?
More cursed knowledge (for them, probably not you): it's logarithmic so every 3dB increase is double the energy!
When I was in my first year of college - 26 years ago - I asked a question about logarithms and was thoroughly, angrily (and, looking back on the event, probably justifiably) reamed out by another student about it.
I don't think I publicly spoke up for the rest of that class.
edit: Remove extra words.
I'm gonna go out on a limb and say it probably wasn't justified to respond to a math question like that lol
I think it was an overreaction in terms of its delivery, but I was homeschooled and started college early. I was the stereotypical socially inept homeschooler. The class was introduction to college algebra, which doesn't usually cover logarithms AFAIK; I brought them up unprompted during a quiet moment when the teacher was cleaning the whiteboard. I was curious about them because I had been reading my older brother's textbooks and found them interesting.
The other student's complaint about me was that I monopolized the teacher's attention by sitting front and center and raising my hand for every question. Additionally she felt that I was trying to show off. At that point I was also very visibly younger than everyone else, which did occasionally annoy people. (This became less of an issue when I hit puberty and started growing a beard.)
But I was oblivious to those kinds of things at the time and didn't realize I was having any kind of impact on anyone else in the class until the other student chastised me. Perhaps it was an overreaction, but the message was one I needed to hear, I think.
Also, to their credit, that student did apologize to me, more calmly expressing the nature of their grievances; I apologized in turn and said that I would try to be less disruptive.
Fair enough. I had some pretty annoying kids in my classes but I never thought to rip them apart in front of everyone!
Funny thing about that, they weren't even in a math class, it was a gender studies class.
People always tilt when I tell them that half an order of magnitude is 3.
Which one is babybel?
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!
That may actually explain the "Bell" enemies in Vintage Story. Noisy assholes.
11111111111111111111111111110101010101010101010101010101010101010101010101010101010101010101010101010101010101010//////sadflkafsfafaAV10101010
Wonder if they got hertz and decibels confused when they were writing that.
So Batman was trying to annoy the tiger away? I think more likely the schlock tv 60s kids show writers just had no idea what they were talking about
Why wouldn't they have just googled it?
Google didn't exist yet. They needed to Ask the real Jeeves.
Alternatively they knew exactly what they meant.
This was their version of 2 people typing to fight off a hacker. I would not be surprised to hear that Adam West created a GUI interface in Visual Basic to track an IP address.
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.
Human hearing ranges from approximately 20 hz through 20,000 hz
Approximately. It differs a lot and the upper limit goes down with age. It also depends on loudness. I could hear up to around 16 kHz in my early twenties. I doubt many adults would hear 20 kHz, unless it was very, very loud.
Right but I heard children, especially at very young age can often hear upto 25k so batman is straight up terrorising children.
Given that audio was going through changes from using physical denominators to using db as a standard, this might have confused them
That's a very..alternative usage of the word "realistically" 😄
My back-of-the-envelope calculation says this would result in about 2·10^995^ Pa of sonic pressure. I could be way off, but yeah... the creation of a black hole seems likely.
Maybe they ment to say 20khz?
The writers for the show weren’t too concerned with scientific accuracy. It’s intentionally silly.
I can remember an episode where people get dehydrated into a powder - and later get rehydrated lol
That was the movie.
People dehydrating into a powder was also a part of a Start Trek: TOS episode. I don't think they came back though. Probably some red shirts.
i mean, if batman only says decibels, we don't know the reference value; SPL was never specified.
So about half of my upstairs neighbors teaching elephants to tap dance at 3AM.
Why would it create a black hole?
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 10^1997 watts, which is 10^1997 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 10^32 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 10^16 pascals.
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.
What color is a hole?
This sounds like bullshit to me
well I don't see any black h
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