In the Media

Prof. Emeritus Daniel Kleppner, “an experimental physicist who helped to develop an atomic clock that became an essential part of global positioning systems (GPS),” has died at the age of 92, reports Dylan Loeb McClain for The New York Times. In addition to his work in atomic clocks, Kleppner also “helped to discover a rare fundamental state of matter predicted by Albert Einstein and his fellow theoretical physicist Satyendra Nath Bose,” writes McClain.