david bushnell was born near saybrook,connecticut on august 30,1740.bushnell took advantages of yale's collage extensive library to study mechanics and other physical sciences.he has also conducted his experiments during his education in yale's collage whic gave rise to new inventions such as gun powder usin timer to tigger a gun powder explosion. he has conducted his most of the experiments underwater. david bushnell is also known as invertor of the submarine
