John Fitzallen Moore (born February 23, 1928) is an American physicist, the son of authors Virginia Moore and Louis Untermeyer. His last name was legally changed after his parents' divorce. His work in military electronics, communications, and spectroscopy culminated in medical electronics and x-ray products with the founding of the company Bio-Imaging Research.
After attending schools in Scottsville, Virginia and High Mowing School in Wilton, New Hampshire, Moore received a B.S. in nuclear physics from MIT in three years (where he and Walter Marvin Jr. founded the Tech Model Railroad Club in 1946), and won a National Science Foundation fellowship that led to an M.S. in solid-state physics from Harvard's School of Applied Science. His first full-time employment was at Raytheon in Waltham, Massachusetts, where he worked on radar and telemetry. At Hycon Eastern (Cambridge, Massachusetts; later acquired by Northrop), he moved from classified missile technology to become Systems Manager of a communications design office in Bangkok, Thailand. On his return, he again worked in aircraft and missile telemetry as Director of Research and Engineering at ASCOP (Princeton, New Jersey; later a division of EMR/Schlumberger). In 1960, he joined Lockheed Electronics in Plainfield, New Jersey, where he advanced from Manager of Operations Analysis to Scientific Advisor to the President, while contributing to "moon-bounce" communication systems and optical signal processors, and creating an infrared laboratory and corporate acquisition analysis. While there, he was appointed to the Lockheed Corporate Research Council, and also attended Columbia University in New York half-time. For the latter, his Ph.D. thesis proved experimentally that carbon dioxide in the atmosphere of Venus has enough greenhouse effect to warm its surface to the spacecraft-observed temperature of over 460 °C (860 °F).