
scienceJan 16, 202519:39pending
Arrow of Time: Entropy, Arrows, and the Quantum Clock
About this episode
Why does time only move forward? In this episode we trace the idea from Eddington’s entropy insight to a family of time arrows—thermodynamic, cosmological, radiative, and causal—plus the quantum arrow. Through intuitive examples like the shattering glass and how waves radiate, we explore how entropy, causality, and the laws of physics shape our sense of time. We also look at modern experiments that hint the quantum arrow might be an emergent property from thermodynamics, not a fundamental clock built into the universe. A mind-bending tour of the direction we all experience as time.
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