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Join William D. Phillips, Distinguished University and College Park Professor of Physics, University of Maryland NIST Fellow, National Institute of Standards and Technology for a Charles M. and Martha Hitchcock Lecture on the topic of A New Measure: The Revolutionary, Quantum Reform of the Modern Metric System.

The International System of Units (the SI), the modern metric system, has recently undergone its most revolutionary change since its origins during the French Revolution. The nature of this revolution is that all of the base units of the SI are now defined by fixing values of natural constants. Our measurement system is now, both philosophically and practically, strongly quantum. This talk will describe why this reform was needed and how it is done.

This lecture will be streamed live on the Berkeley Graduate Lectures website.

Like all Berkeley Graduate Lectures, this event is free and open to the public. Please register to receive updates regarding the event.

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For more information about this lecture and upcoming lecture series events, please visit the Berkeley Graduate Lectures webpage.




Date & Time

February 10, 2022
4:10pm - 5:30pm


Virtual Live-Stream


Graduate Division

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