Zeno's Paradox & The Quantum Zeno Effect

March 23, 2021
18 min
Season 2021 - Episode 9: Zeno's Paradox & The Quantum Zeno Effect

Season 2021 - Episode 9: Zeno's Paradox & The Quantum Zeno Effect

PBS Space Time - Backdrop

Overview

“A moving arrow is at rest.” This is obviously a nonsensical contradiction. But Zeno, a Greek philosopher famous for his metaphysical trolling, devised a paradox whose conclusion is just this. Here’s how it goes: if you look at an arrow flying through the air at any instantaneous snapshot in time, the arrow doesn’t travel any distance. If time is composed of an infinite number of these snapshots, and the arrow doesn’t move in any of them, then the arrow is at rest during the entirety of its flight. The moving arrow is at rest.

Episode Information

TV Show

PBS Space Time

Season

Season 2021

Episode Number

9

Air Date

March 23, 2021

Runtime

18 minutes