Paradigm
Paradigm
Tony Padilla: Black holes, entropy, and our holographic universe
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Tony Padilla: Black holes, entropy, and our holographic universe

Tony Padilla is a theoretical physicist and a star of the Numberphile YouTube network, where many of his videos have been viewed by millions of people around the world.

Tony Padilla is a theoretical physicist and a star of the Numberphile YouTube network, where many of his videos have been viewed by millions of people around the world.

Today’s discussion includes:

  • The mysterious force of gravity

  • The search for a so-called ‘theory of everything’

  • Black holes, including the black hole at the centre of our own galaxy

  • Entropy, and Stephen Hawking’s foundational contributions to this topic

  • The possibility that we may be living in a holographic universe

… and other topics.

Watch on YouTube. Listen on Spotify, Apple Podcasts, or any other podcast platform. Read the full transcript here. Follow me on LinkedIn or Twitter/X for episodes and infrequent social commentary.


Episode links


Timestamps

0:00 Intro

0:18 How did Tony become the star of Numberphile?

2:50 Why is gravity so mysterious?

7:15 The cosmological constant problem

12:16 Quantum field theory vs General relativity and the multiverse

18:35 Why are physicists skeptical about string theory?

22:50 Does a theory of everything have to be beautiful?

26:41 Fantastic Numbers and Where to Find Them

28:55 What is a black hole?

31:10 Stephen Hawking - what is he know for?

37:20 Time flows backwards inside a black hole

43:27 Imaginary time

48:32 Entropy and black holes

57:22 Holographic principle and the black hole at the centre of the Milky Way

1:04:22 Why does a holographic universe 'look' three dimensions?

1:06:52 Book recommendations!

1:08:12 Advice for other physicists

1:09:45 Greta Thunberg (really)

Paradigm
Paradigm
Conversations with the world's deepest thinkers in philosophy, science, and technology. A global top 10% podcast by Matt Geleta.