Professor Langford headed the dig at Giza that uncovered the stargate in 1928. In 1945 he was part of a team of research scientists including Heinrich Gruber and Ernest Littlefield, which was conducting experiments on the gate for the US government to determine its viability as a possible weapon during World War II. His team succeeded in activating the gate by dialing it manually, but the research program was abruptly shut down and all documentation classified and buried when Ernest Littlefield went through the gate and was lost. Years later, Dr. Langford's daughter, Catherine Langford, petitioned the government to reactivate the stargate program.
Portrayed by: Duncan Fraser
Episode Reference: The Torment of Tantalus