The passage reads: 4. The Four Laws In this section we shall pursue the analogy between black holes and thermodynamics and shall formulate four laws which correspond to and in some ways transcend the four laws of thermodynamics.

Notices where this attachment appears

1. Robert McNees (mcnees@mastodon.social)'s status on Sunday, 08-Jan-2023 20:03:49 UTC Robert McNees

   in reply to

   If you’ve studied thermodynamics this might sound familiar.

   Hawking’s work in the early 1970s established a really suggestive analogy between the laws of thermodynamics and the laws governing black holes. Bardeen, Carter, and Hawking flesh it out right there in the paper.

   But it's just an analogy, right? Thermodynamics is about stuff that is in some sense "hot," and the most basic property of a hot object is that it radiates or emits energy. According to GR black holes don't emit anything!