By now, just about everyone knows about black holes: the all-consuming regions in outer space that are so dense that not even light can escape from their mysterious interior. Find out more information at 🚀 Engineering
By now, just about everyone knows about black holes: the all-consuming regions in outer space that are so dense that not even light can escape from their mysterious interior. But those are only one kind of black hole, even if they are the most famous of the bunch.
But, if a pair of virtual particles spawn along the edge of an event horizon, one of the two particles will get sucked into the black hole, while the remaining particle survives and flies away into space as a form of energy known as Hawking radiation.You can see the problem, right? The universe just took some of its energy and created matter out of nothing, but didn't get that energy back.
Quantum mechanics as we know it requires that this information, just like the energy of the universe,. It might be scrambled beyond all recognition, but there's nothing in physics that says you can't go back and undo that scrambling and reclaim that information — unless it was either inside a black hole or encoded into its event horizon when that black hole winked out of existence, thus taking that information with it.
A sonic black hole then, is this exact same phenomenon, except where the escape velocity of an object exceeds the, rather than the speed of light. Fortunately, the speed of sound is much, much lower than the speed of light, so at sea level with a temperature of 59 degrees Fahrenheit , sound travels at 761 miles per hour .
What's more, even though a sonic black hole behaves the same way in one regard, the creation of an event horizon that produces a form of Hawking radiation, it might be too reductive to say that sharing a surface-level characteristic makes the two identical on more fundamental levels. A collection of 8,000 rubidium atoms in a BEC is not the same thing as a spacetime singularity of infinite density where physics as we know it breaks down. An analogy is just an analogy, after all.
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