[cmrdsprklpny]

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]

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.

[unyttigfjelltol]

Making a microscopic black hole on the surface of the Earth was #3 on the list of `How to Destroy the Earth`[1], also on HN today. For the first half of the article I was musing at the connection (and implausibility of reading about a research team actually completing the feat).

[1] https://news.ycombinator.com/item?id=26204892

[nine_k]

The smaller the black hole, the faster it evaporates. But having a planet around would instantly make it larger.

[karlicoss]

60 symbols have a good video on analog black holes https://m.youtube.com/watch?v=kOnoYQchHFw