De Forest

Speech parts

1. De Forest - Noun

2. De Forest - Proper noun

Meaning

United States electrical engineer who in 1907 patented the first triode vacuum tube, which made it possible to detect and amplify radio waves (1873-1961)

Synonyms

Examples

But before the earlier date, De Forest sought and obtained a high vacuum in the audions used as amplifiers, and observed that when the vacuum was too low the blue glow effect occurred at from 15 to 20 volts. Source: Internet

De Forest's initial Audions did not have a high vacuum and developed a blue glow at modest plate voltages; De Forest improved the vacuum for Federal Telegraph. Source: Internet

Disney used Pat Powers' Cinephone system, created by Powers using Lee De Forest 's Phonofilm system. Source: Internet

However the Fleischers used a De Forest sound system and the sound was not completely synchronized with the film. Source: Internet

In 1906, Lee De Forest brought out a vacuum tube device which he called the " audion ". Source: Internet

In its Audion leaflets, the De Forest company even warned against any operation which might lead to too high a vacuum. Source: Internet

Close letter words and terms