Exploring the Precision and Implications of Atomic Clocks

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The chapter delves into the advanced technology and theories behind atomic clocks, discussing their precision in measuring time and their potential technological implications. It explains experiments with aluminum ion clocks for testing general relativity and geodesy, as well as the use of ultra precise atomic clocks on satellites for detecting gravitational waves. Furthermore, it explores the possibility of constants of nature changing over time and the potential of atomic clocks to test theories like string theory.

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Today on Into the Impossible, we’re exploring the fascinating realm of time with none other than the timekeeper himself – Chad Orzel.

Chad is a professor of physics and science communicator renowned for his popular science books, How to Teach Quantum Physics to Your Dog, Breakfast with Einstein, and How to Teach Relativity to Your Dog. He is also a regular contributor to Forbes.com.

In his most recent book, A Brief History of Timekeeping, Chad revisits the delicate negotiations involved in Gregorian calendar reform, the intricate and entirely unique system employed by the Maya, and how the problem of synchronizing clocks at different locations ultimately required us to abandon the idea of time as an absolute and universal quantity.

From sundials to sandglasses and mechanical clocks, this sharp and engaging story isn't just about the science of timekeeping—it's a riveting tale encompassing politics, philosophy, and the very essence of space and time.

Tune in!

Key Takeaways:

00:00:00 Intro
00:01:07 Judging a book by its cover
00:05:07 Galileo’s telescope helmet
00:10:23 The connection between time and astronomy
00:13:11 Why is longitude so hard to measure?
00:15:32 The relativity of simultaneity
00:22:12 The future of education after COVID
00:25:55 The standard definition of time
00:31:19 Attosecond clocks
00:36:33 Why time is so much more perplexing than space
00:40:23 How to teach students new things
00:43:14 On education
00:49:05 Outro

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Additional resources:

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➡️ Learn more about Chad Orzel:

✖️ Twitter: https://twitter.com/orzelc/

📚 Website: https://chadorzel.com/

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Into the Impossible with Brian Keating is a podcast dedicated to all those who want to explore the universe within and beyond the known.

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