Then he moved to Massachusetts Institute of Technology, where he obtained his BSc in Electrical Engineering in 1916.
[6] After his graduation in 1916 he enlisted in the U.S Navy, where he served United States Army Coast Artillery Corps in 1916-17 and 1923-24.
[6] He resigned as Army officer in 1925, and got appointed associate professor of engineering at the Massachusetts Institute of Technology.
In World War II he was special assistant to Secretary of the Navy Frank Knox in Washington.
[1] Barker retired from Columbia in 1946,[7] and next until 1974 served as president and board chairman of the Research Corporation, a science advancement foundation.