Yahoo Italia Ricerca nel Web

Risultati di ricerca

  1. Lee De Forest è stato uno scienziato, inventore, regista, anche produttore cinematografico e direttore della fotografia statunitense. Brevettò più di trecento invenzioni nel campo della telegrafia, telefonia, della radio, del cinema sonoro e della televisione. La sua invenzione più importante, realizzata nel laboratorio della ...

  2. Lee de Forest (August 26, 1873 – June 30, 1961) was an American inventor, electrical engineer and an early pioneer in electronics of fundamental importance. He invented the first practical electronic amplifier, the three-element "Audion" triode vacuum tube in 1906.

  3. 26 giu 2024 · Lee de Forest was an American inventor of the Audion vacuum tube, which made possible live radio broadcasting and became the key component of all radio, telephone, radar, television, and computer systems before the invention of the transistor in 1947.

  4. 20 giu 2023 · Learn how Lee de Forest modified the Fleming valve to create the Audion, a three-terminal vacuum tube that enabled amplification, detection, and oscillation. Discover his contributions to radio, television, radar, and computing technologies in the early twentieth century.

    • Robert Keim
  5. Learn about the life and inventions of Lee De Forest, an American inventor who created the Audion, a device that amplified and modulated electromagnetic signals. He also developed Phonofilm, a system of sound-on-film technology for motion pictures.

  6. DE FOREST, Lee. Inventore americano, nato a Council Bluffs, Iowa, il 26 agosto 1873. Dopo aver compiuto i suoi studî a Yale e a Chicago iniziò la sua carriera in quest'ultima città nel laboratorio di una società telefonica.

  7. lemelson.mit.edu › resources › lee-deforestLee DeForest | Lemelson

    Learn about Lee DeForest, the "Father of Radio", who invented the triode or audion tube that made wireless radio broadcasting possible. Explore his biography, patents, and achievements in computing and telecommunications.