Betsy Ancker-Johnson
Betsy Ancker-Johnson (born April 29, 1927) is an American plasma physicist.[1] She is known for her research into instabilities that can occur in plasmas in solids,[2] and for her invention of a gigacycle range signal generator using semiconductor materials in magnetic and electric fields. She was the first female Presidential appointee in the U.S. Department of Commerce. She is the fourth woman elected to the National Academy of Engineering.
She has recently appeared on the Emilio Segrè Visual Archives 2012 Calendar by the American Institute of Physics.[3]
References
- ^ "Inventor of the Week Archive". MIT. January 2005. Retrieved March 13, 2012.
- ^ "Ancker-Johnson, Betsy". CWP, UCLA. Retrieved March 13, 2012.
- ^ "AIP Director's Matters". AIP. November 14, 2011. Retrieved August 12, 2012.