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Show HN: Physically accurate black hole simulation using your iPhone camera

(apps.apple.com)
313 points yunyu | 1 comments | 19 Nov 24 17:06 UTC | HN request time: 1.495s | source
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elashri ◴[19 Nov 24 21:26 UTC] No.42188258[source]▶
That seems cool. It would be interested to see a simulation for Kerr-Newman BH. Although I have no idea what would be the best way to see the effects without some sort of perturbation. Not that this is astrophysical BH of course. Just a thought experiment.
replies(1): >>42189501 #
1. lupsasca ◴[20 Nov 24 00:15 UTC] No.42189501[source]▶
I haven't looked into the equations but I expect the effect of varying the electric charge would be similar to (but less dramatic than) changing the spin of the black hole, which as you can see in our app is not that big of a change.