George Gioumousis died peacefully at age 79 on September 23 in Palo Alto, California, where he had lived for most of his adult life. He was born March 2, 1929 in Brooklyn, New York to his parents Katherine and Emanuel, both of whom had come from Greece to the United States. He received a BS in Chemistry from Brooklyn Polytechnic Institute in 1951, a MS in Mathematics and PhD in Theoretical Chemistry in 1954 and 1955 from University of Wisconsin in Madison, Wisconsin.

He is survived by his wife, Ellie Gioumousis;  two sons, Andrew of Menlo Park, CA and Peter of Palo Alto; daughter, Martha and her partner, Hilary Greenberger of Newfield, New York; daughter Elizabeth and her husband, Henry Hazebrouck  and their daughter, Allison of Sunnyvale, CA; sister, GG Farber and her husband, David of Pennsylvania; sister, Theodosia Zalantis and her husband, George of Staten Island, NY; and several nieces and nephews.

George was an avid photographer, documenting the growth of his family as well as many nature studies. Most recently, he was fascinated by stereo photography. He and Ellie and the family took many camping and rock climbing trips together. He also enjoyed mystifying his family with sleight of hand tricks, science fiction, beekeeping, astronomy, woodworking, electronics and anything having to do with computers.

He will be buried at Greensprings Natural Cemetery in Newfield, NY on Sunday, September 28, at 2 p.m. Arrangements are with Lansing Funeral Home.