Proper Time Experiments in Gravitational Fields with Atomic Clocks, Aircraft, and Laser Light Pulses

  • Carroll O. Alley
Part of the NATO Advanced Science Institutes Series book series (NSSB, volume 94)


Quantum Optics is a part of the more general subject of Quantum Electronics which includes atomic clocks as well as lasers. By utilizing our understanding of the quantum mechanical properties of ground state hyperfine transitions at microwave frequencies in certain atoms, very stable clocks have been made which allow highly accurate time measurements. Similar knowledge of optical transitions between electronic energy states in atoms allows lasers to be made with their many marvelous properties. These include the ability to produce very, very short pulses of light which can be used for optical radar and remote time comparison.


Global Position System Gravitational Field Light Pulse Gravitational Potential Proper Time 
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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • Carroll O. Alley
    • 1
  1. 1.Department of Physics and AstronomyUniversity of MarylandCollege ParkUSA

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