Well, my crazy question is whether it would be possible to make a "dyson sphere", but with the sonic black hole made with Bose-Einstein condensate (and whether it would be possible to create a black hole itself with that sonic black hole).
There is a fifth state of matter called "Bose-Einstein Condensate" (the 4th one is plasma), which is achieved by cooling a material close to absolute zero (in case you don't know, the term "absolute zero" refers to the Kelvin scale, which is more accurate than that the Celsius scale that we use, would be equivalent to -273.15 °C).
Basically, in this state, the matter is like a "cloud" (hence the name "condensate"). The interesting part is that scientists used this state of matter to prove Hawkin's paradox (yes, Stephen Hawkin, that guy in the wheelchair), where black holes waste energy with virtual particles and "die" after some ages in the universe (it is a paradox because nobody knows where the energy sucked to the black hole goes).
They did this by using Bose-Einstein Condensate to create a sound black hole (which acts like a normal black hole, but only with sound waves).
"The Black Hole Bomb and the Black Hole Civilizations": https://youtu.be/ulCdoCfw-bY
Well, the point is that there is a type of "Dyson sphere" for black holes, which is simply a "sphere" made of mirrors.
Certain types of black holes, the rotating ones, can accelerate anything that passes close to them. As if you are swimming in the same direction as the tide.
With this, if you turn on a lamp on one side, on the other you will receive a faster and more energetic light. Technically generating "infinite" energy (until the black hole "dies").
Well, my crazy question is whether it would be possible to do that same thing, but with the sound black hole made with Bose-Einstein condensate.
My second crazy question is whether it would be possible to create an artificial black hole using this bomb.
Basically, as shown in the video, if you do this with a black hole and do not open this sphere of glass to release the energy, the light will bounce and gain energy until the mirror can not take it anymore, releasing the energy equivalent to that of a supernova.
Assuming that the audible black hole would work the same way, you would create a super bomb without explosives. Because when the sound (which in itself is just vibrations in the air) reaches a certain volume, it stops being vibrations and becomes impact waves (like an explosion). The point is that if you reach a certain volume (1100 decibels), the shock waves compress the air enough to create micro-black holes.
Thus, with vibrations large and constant enough, it would be possible to create an artificial black hole using a sonorous black hole.
Again: assuming that this audible black hole behaves in the same way as a rotating black hole.
Well, if this is physically impossible, at least it is a cool sci-fi concept...