The Intermolecular Forces of Iron

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An extremal black hole is an example of a black hole where the mass is being balanced by something else. In practice, we think that in practice, that's never going to happen. If I have two black holes and they're both positively charged, then the gravitational field is going to attract them together but repel them. And it turns out that it balances when you have what is called an extremal Black Hole.

Welcome to the April 2023 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy!

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