The Johns Hopkins University Applied Physics Laboratory
- Ralph D. Semmel
Ralph D. Semmel
Director at The Johns Hopkins University Applied Physics Laboratory
Dr. Ralph D. Semmel became the eighth director of the Johns Hopkins University Applied Physics Laboratory on July 1, 2010. As director, Dr. Semmel leads the nation’s largest university affiliated research center, which performs research and development on behalf of the Department of Defense, the intelligence community, NASA, and other federal agencies.
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Director
Current role