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Physics for the 21st Century

The Quantum World – Video

We are in a new quantum age in which the abstract concepts of the quantum revolution have become concrete thanks to rapid advances in controlling and manipulating atoms, molecules, and light. Practical applications, from lasers and atomic clocks to telecommunications and mp3 players, are only part of the story. Find out how laser cooling and trapping enables new laboratory experiments as models for disparate systems, giving new insight to phenomena at extreme scales from the atomic nucleus to neutron stars. Cooling and trapping atoms is also key to super-precise clocks—new tools that are being used to search for subtle changes over time in the fundamental constants of nature.

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Extra: NIST Atomic Clocks

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Physics for the 21st Century, NIST Atomic Clocks — Video Transcript


John Lowe with the National Institute of Standards and Technology demonstrates the concept of atomic time coordinated to universal time.

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Physics for the 21st Century


Produced by the Harvard-Smithsonian Center for Astrophysics Science Media Group in association with the Harvard University Department of Physics. 2010.
  • Closed Captioning
  • ISBN: 1-57680-891-2