The deep mystery physicists call “the problem of time” | Jim Al-Khalili: Full Interview

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Brian Cox: The quantum roots of reality | Full Interview ► https://www.youtube.com/watch?v=kO41iURud9c

Time feels obvious, but physics tells a stranger story about its existence: Theoretical physicist Jim Al-Khalili explores why our sense of time may be incredibly misleading, including the idea that past, present, and future might all exist at once.

0:00 Chapter 1: Does time flow?
2:42 Why Time Feels Faster as We Age
3:56 Time and Change in Philosophy and Physics
5:28 Einstein and the End of Absolute Time
6:19 Time in the Equations of Physics
7:50 Chapter 2: How do we reconcile quantum field theory with the general theory of relativity?
12:10 Evidence for Time Dilation: Muons
14:29 Gravity Slows Time: General Relativity
19:22 Space-Time and the Block Universe
21:55 Does Time Really Exist?
26:33 The Debate: Eternalism vs Presentism
34:12 Chapter 3: Is There a “Now”?
40:40 Chapter 4: Why Does Thermodynamics Have a Direction in Time?
49:38 Quantum Entanglement and the Direction of Time
55:10 Did Time Begin at the Big Bang?
45:00 Will Time End?
1:05:40 Chapter 5: Is Time Travel Possible?

Read the video transcript ► https://bigthink.com/series/the-big-think-interview/block-universe-alkhalili/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description

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About Jim Al-Khalili:

Jim is a multiple award-winning science communicator renowned for his public engagement around the world through writing and broadcasting and a leading academic making fundamental contributions to theoretical physics, particularly in nuclear reaction theory, quantum effects in biology, open quantum systems and the foundations of quantum mechanics.

Jim is a theoretical physicist at the University of Surrey where he holds a Distinguished Chair in physics as well as a university chair in the public engagement in science. He received his PhD in nuclear reaction theory in 1989 and has published widely in the field. His current interest is in open quantum systems and the application of quantum mechanics in biology.