An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Radiation expert and historian Bert Coursey, who has worked at NIST for 50 years, writes extensively on the history of radium and radiation standards. He
NIST physicist Zachary Levine doesn’t cook that often, but when he does it can easily turn into a science experiment. Two years ago, after he and his wife had