Reginald Fessenden, inventor of a transducer that converted electrical energy to sound energy while transmitting and sound energy to electrical energy

Reginald Fessenden, inventor of a transducer that converted electrical energy to sound energy while transmitting and sound energy to electrical energy while receiving, at work in his laboratory. Fessenden was a major developer of ocean acoustic instruments following the sinking of the TITANIC, during WWI, and following the war years.

Photo Category: Personnel - Single Portrait
Photo Date: 1915 ca.