| Share
 

Lee de Forest

Born: 1873
Birthplace: Council Bluffs, Iowa

Audion amplifier—De Forest inserted a third electrode between the cathode and anode to make his audion tube. Radio signals are picked up by connecting an antenna to the tube's grid. (1977)

Died: 1961

Information Please® Database, © 2007 Pearson Education, Inc. All rights reserved.

John DeereThe National Inventors Hall of FameRobert Heath Dennard

More on Lee de Forest from Infoplease:

24 X 7

Private Tutor

Click Here for Details
24 x 7 Tutor Availability
Unlimited Online Tutoring
1-on-1 Tutoring