Jul 20, 1998 · Guglielmo Marconi (born April 25, 1874, Bologna, Italy—died July 20, 1937, Rome) was an Italian physicist and inventor of a successful wireless telegraph, or radio (1896). In …

From about 1920 to 1945, radio developed into the first electronic mass medium, monopolizing “the airwaves” and defining, along with newspapers, magazines, and motion pictures, an entire …

From 1920 onward radio made phenomenal progress through research activities in Europe, North America, and Asia. The invention of the electron tube and later the transistor (1948) made …

Dec 13, 2025 · Guglielmo Marconi - Radio, Telegraph, Wireless: Marconi’s great triumph was, however, yet to come.

Aleksandr Popov was a physicist and electrical engineer acclaimed in Russia as the inventor of radio. Evidently, he built his first primitive radio receiver, a lightning detector (1895), without …

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, …

Guglielmo Marconi, (born April 25, 1874, Bologna, Italy—died July 20, 1937, Rome), Italian physicist and inventor.

Dec 14, 2025 · Edwin H. Armstrong was an American inventor who laid the foundation for much of modern radio and electronic circuitry, including the regenerative and superheterodyne circuits …

This invention was the starting point for radio. Marconi was born on April 25, 1874, in Bologna, Italy. At about age 20 he became interested in radio waves. Radio waves are streams of …

In the late 1890s several people began working on ways to send and receive electric signals using radio waves. An Italian scientist named Guglielmo Marconi got much of the credit for …