Mysteries of Modern Physics: Time

Tackle one of the greatest problems in all of science—the nature of time itself—in this groundbreaking course by one of the foremost researchers in this field.

• By This Professor
• 01: Why Time Is a Mystery
• 02: What Is Time?
• 03: Keeping Time
• 04: Time's Arrow
• 05: The Second Law of Thermodynamics
• 06: Reversibility and the Laws of Physics
• 07: Time Reversal in Particle Physics
• 08: Time in Quantum Mechanics
• 09: Entropy and Counting
• 10: Playing with Entropy
• 11: The Past Hypothesis
• 12: Memory, Causality, and Action
• 13: Boltzmann Brains
• 14: Complexity and Life
• 15: The Perception of Time
• 16: Memory and Consciousness
• 17: Time and Relativity
• 18: Curved Spacetime and Black Holes
• 19: Time Travel
• 20: Black Hole Entropy
• 21: Evolution of the Universe
• 22: The Big Bang
• 23: The Multiverse
• 24: Approaches to the Arrow of Time