Applied Physics Laboratory

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Q249373




The Johns Hopkins University Applied Physics Laboratory, or simply Applied Physics Laboratory, or APL, is a not-for-profit U.S. Navy-sponsored university-affiliated research center (UARC) in Howard County, Maryland. APL is affiliated with Johns Hopkins University and employs more than 8,800 people as of 2025. APL is the nation's largest UARC. APL conducts research, engineering and analysis to address national security and scientific challenges faced by the United States and its allies. The Laboratory brings together technical expertise, longstanding experience and specialized facilities to support rapid prototyping and long-term research and development. APL works across a range of domains, contributing to both operational systems and foundational science and technology.

1942 WebsiteWikimediaWikidata
APL; Applied Physics Laboratory; JHU APL; JHUAPL; Johns Hopkins Applied Physics Laboratory; The Johns Hopkins University Applied Physics Laboratory
laboratory, nonprofit organization, University Affiliated Research Center, defense contractor, 


Location: 39.1653, -76.8972, KML, Cluster Map, Maps,
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    Photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Smithsonian Institution Archives)Photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Smithsonian Institution Archives)
    Marc Buie (NHQ201812310050)Marc Buie (NHQ201812310050)
    Photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (2) (Smithsonian Institution Archives)Photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (2) (Smithsonian Institution Archives)
    Back side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University)Back side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University)
    Schematic of the Uranus Orbiter and Probe, as of 2021Schematic of the Uranus Orbiter and Probe, as of 2021
    Photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (JScholarship)Photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (JScholarship)
    Front side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University).jpgFront side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University).jpg
    Back side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University)Back side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University)
    Proximity fuse, Applied Physics Lab, Johns Hopkins University, 1945 - National Museum of American History - DSC00065Proximity fuse, Applied Physics Lab, Johns Hopkins University, 1945 - National Museum of American History - DSC00065
    Alan Stern and New Horizons Team Celebrate Pluto FlybyAlan Stern and New Horizons Team Celebrate Pluto Flyby
    TypeSubtypeDateDescriptionNotesSource
    commonsimagePhotograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Smithsonian Institution Archives) Commons
    commonsimageMarc Buie (NHQ201812310050) Commons
    commonsimagePhotograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (2) (Smithsonian Institution Archives) Commons
    commonsimageBack side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University) Commons
    commonsimageSchematic of the Uranus Orbiter and Probe, as of 2021 Commons
    commonsimagePhotograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (JScholarship) Commons
    commonsimageFront side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University).jpg Commons
    commonsimageBack side of a photograph of Chih-Kung Jen from the Press Communications Office of the Applied Physics Laboratory, February 1962 (Special Collections, Sheridan Libraries, Johns Hopkins University) Commons
    commonsimageProximity fuse, Applied Physics Lab, Johns Hopkins University, 1945 - National Museum of American History - DSC00065 Commons
    commonsimageAlan Stern and New Horizons Team Celebrate Pluto Flyby Commons