Clocks: A Brief History of Telling Time
Forever Ago
00:00
How Long Does a Pendulum Clock Swing?
Galileo discovered that a pendulum took the same amount of time to move from side to side no matter how wide its swing was. This allowed higens to make the most precise clock the world had ever seen. Once pendulum clocks became the norm, clock makers could promise accuracy within 15 seconds.
Transcript
Play full episode
