collage of woman working in lab with images of wires and timestamps

Timekeeper: Alumna Leading Effort to Perfect the Second

Physicist Elizabeth Donley tackles the challenge of precisely redefining the second.

Physicist and UNLV alumna Elizabeth Donley is chief of the Time and Frequency Division at the National Institute of Standards and Technology (NIST). (Illustration by Becca Schwartz/UNLV)

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