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McKelvey School of Engineering

A Brief History of Time (Delays): 50 Years of Tests of General Relativity

Saturday, October 16 | 10:00 AM

Virtual Event

This year marks the 50th anniversary of the Hafele-Keating test of General Relativity (GR), which confirmed predictions that moving clocks and clocks that experience different gravitational potentials measure time proceeding at different rates. Since the demonstration by WUSTL Physics Professor Joseph Hafele, understanding this effect has become an important part of our everyday lives (for example, in the operation of GPS time and navigation, for which WUSTL Physics Professor Cliff Will was consulted to verify GR timing corrections!) Equally importantly, tests of General Relativity have become increasingly sophisticated, via studies such as pulsar timing and the recent imaging of a supermassive black hole by the Event Horizon Telescope. Starting with the Hafele-Keating test, Professor Nowak will summarize some of these tests and discuss how we are moving from tests of GR, itself, to using this knowledge to address problems in astrophysics and nuclear physics.

The Zoom link will be sent via email to everyone on our email list before each lecture. Those wishing to join the email list should email a request to physics@wustl.edu.

Event Type

Lectures & Presentations


Arts & Sciences


Science & Technology



Event Contact


Speaker Information
Michael Nowak from the Department of Physics, Washington University in St. Louis will be hosting this Saturday Science Lecture on "A Brief History of Time (Delays): 50 Years of Tests of General Relativityā€¯
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