[HN Gopher] Researchers observe stationary Hawking radiation in ... ___________________________________________________________________ Researchers observe stationary Hawking radiation in an analog black hole Author : dnetesn Score : 14 points Date : 2021-02-20 11:45 UTC (11 hours ago) (HTM) web link (phys.org) (TXT) w3m dump (phys.org) | cmrdsprklpny wrote: | I was confused as to how the researchers created a black hole in | a lab, which I hadn't heard of being done before. As far as I can | tell, an "analog" black hole is different from a normal black | hole in that it doesn't use gravity and only works on acoustic | waves or electromagnetic waves, depending on the type [1]. That | said I don't really get what's going on. | | I'd be curious if someone who actually knows what they're talking | about could try to clarify how the researchers have a black hole | here. | | EDIT: There's a link[2] to another article at the bottom that | describes how the researchers are simulating a black hole. My bad | for not catching this earlier. | | [1]: http://www.phy.olemiss.edu/~luca/Topics/bh/analog.html [2]: | https://phys.org/news/2014-10-mimic-hawking-lab.html | ojnabieoot wrote: | Yes, I think it might have been more straightforward to say | "Researchers observe stationary Hawking radiation in 'acoustic | black hole'" or something to clarify to laypeople that this is | a mathematically analogous but physically very different | experiment. I don't think it's too difficult to conceptualize | that sound waves behave similarly to light waves and that | properties of black holes can be "simulated" with sound. ___________________________________________________________________ (page generated 2021-02-20 23:00 UTC)