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Wrong John Prestage?

John D. Prestage

Senior Research Scientist

JPL Productions

HQ Phone:  (717) 558-8048

Email: j***@***.com

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I agree to the Terms of Service and Privacy Policy. I understand that I will receive a subscription to ZoomInfo Community Edition at no charge in exchange for downloading and installing the ZoomInfo Contact Contributor utility which, among other features, involves sharing my business contacts as well as headers and signature blocks from emails that I receive.

JPL Productions

471 Jplwick Drive

Harrisburg, Pennsylvania,17111

United States

Company Description

JPL is one of Mid-Atlantic's largest full-service, integrated, marketing agencies. The firm provides strategic thinking and creative execution across a full range of services that include brand, digital, marketing, advertising, video production and internal co...more

Background Information

Employment History

Organizing Committee


Web References(22 Total References)


APS Topical Group on Precision Measurement and Fundamental Constants - Executive Committee

positron.aps.org [cached]

John D. Prestage (2003)JPL 298-104


www.ifcs-eftf2011.org

John Prestage, JPL/NASA


Best-in-Space: News: NASA-Built Atomic Clock Does the Time Warp, Again

www.best-in-space.com [cached]

"Atomic ions colliding with this sort of 'wall' are disturbed about 10,000 times less than in glass cell-based atomic clocks," said Dr. John Prestage of the JPL Quantum Sciences and Technology Group.


Astronomy Online Pty. Limited - Home

www.binocular.com.au [cached]

based atomic clocks," said Dr. John Prestage of the JPL Quantum Sciences and Technology Group.


Spaceflight Now | Breaking News | NASA-built atomic clock does the time warp, again

www.spaceflightnow.com [cached]

"Atomic ions colliding with this sort of 'wall' are disturbed about 10,000 times less than in glass cell-based atomic clocks," said Dr. John Prestage of the JPL Quantum Sciences and Technology Group.Because the mercury ions have a positive charge, they can be held with oscillating electric fields in a container produced with metallic electrodes inside an ultra-high vacuum system, and made into a clock. Like all clocks, atomic clocks measure frequency of a recurring event to keep time.A wonder of quantum mechanics that govern the world of atoms is that every isolated atom in the universe is exactly the same as every other atom of the same element and containing the same number of neutrons.Atomic clocks have unique measurement capability because every atom or ion in the clock is quantum-mechanically identical to every other one.Therefore, by measuring the transition of atoms as they move back and forth between two energy levels, atomic clocks provide an absolute reference for frequency and time.


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