how we make 1100db sound
Answers
Explanation:
It's not possible as a continuous sound in air because the maximum overpressure is double atmospheric, with the troughs a vacuum, which works out at 194 decibels. The answer is unfeasibly loud, and no, it can't create a black hole that big. At 1100 db it creates a 5 kg black hole with the same volume as a neutron.
Answer:
The answer is unfeasibly loud, and no, it can’t create a black hole that big. At 1100 db it creates a 5 kg black hole with the same volume as a neutron. First, this is not meant seriously. It's just physicists having fun with maths. It's a ridiculously loud "sound". It’s not possible as a continuous sound in air because the maximum overpressure is double atmospheric, with the troughs a vacuum, which works out at 194 decibels.
That means it has to be a shockwave, which can be compressed to more than atmospheric pressure. 1100 dB is the volume level at which the shockwave compresses the air to a density sufficient to make micro black holes the size of a neutron. 724 dB is the volume level of a shockwave which compresses air to a compact mass of neutrons, with density the same as a neutron star.
You can work out the number of decibels of a shockwave from the amount of overpressure compared to atmospheric pressure, which in turn yields a density. For 1100 dB it works out as a density of 2.45e+45 kg/m3.
That needs you to compress five kilograms of air into a region of radius 8.0 × 10^-6 angstrom units (details below), or about the radius of a proton or neutron.
You can’t have more than five kilograms compressed into the volume of a proton or neutron, because the density of a black hole goes down as the inverse square of the mass, for instance a black hole of 50 kg would have a hundredth of the density of a black hole of radius 5 kg, and so wouldn’t have enough overpressure to count as 1100 dB.
So, I think this number probably originated in someone who converted the density of a proton sized black hole into decibels. Of course if it goes that far it’s not a sound any more, it can’t propagate through the atmosphere as a vibration of molecules once the material is compressed into a black hole.
And no, a five kilogram black hole can’t devour the galaxy. Indeed black holes can’t “suck in” matter from a distance. Even the big monster black hole at the center of our galaxy has many stars orbiting it safely close by. It’s only if you get inside the Shwarzchild radius that you can get swallowed by it.
In principle it could devour the Earth but that would take ages for such a tiny black hole, even with its strong gravity. Most likely it just disintegrates through Hawking radiation. It would have a lifetime of 1.05134E-14 seconds.
Explanation:
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