William "Bill" H. Ellett is a physicist. He graduated from Rensselear Polytechnic Institute with a B.S. in physics. He earned a masters of science in physics at New York University and a doctorate in radiation physics at Royal Postgraduate Medical School at the University of London. From 1984 to 1992, he served as a consultant for the Radiation Effects Research Foundation at Hiroshima. From 1985 to 1991, he was a a senior program officer on the Board on Radiation Effects Research, Commission on Life Sciences with the National Academy of Sciences.