The Mystery Physicists Call “The Problem of Time"

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The Mystery Physicists Call “The Problem of Time"

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.

00:00 - Chapter 1: Does time flow?

02:42 - Why Time Feels Faster as We Age

03:56 - Time and Change in Philosophy and Physics

05:28 - Einstein and the End of Absolute Time

06:19 - Time in the Equations of Physics

07:50 - Ch-apter 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?

59:00 - Chapter 5: Is Time Travel Possible?

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The Mystery Physicists Call “The Problem of Time"

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