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  1. History of radio - Wikipedia

    • In an 1864 presentation, published in 1865, James Clerk Maxwell proposed theories of electromagnetism and mathematical proofs demonstrating that light, radio and x-rays were all types of electromagnet… See more

    Exploration of Optical Qualities

    After their discovery many scientists and inventors experimented with transmitting and detecting "Hertzian waves" (it would take almost 20 years for the term "radio" to be universa… See more

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    Proposed Applications

    Between 1890 and 1892 physicists such as John Perry, Frederick Thomas Trouton and William … See more

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    Marconi and Radio Telegraphy

    In 1894, the young Italian inventor Guglielmo Marconi began working on the idea of building long-distance a wireless transmission systems based on the use of Hertzian w… See more

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    Audio Transmission

    In the late 1890s, Canadian-American inventor Reginald Fessenden came to the conclusion that he could develop a far more efficient system than the spark-gap transmitter … See more

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  2. 1920s
    • According to 2 sources
    By the 1920s, a few decades after Marconi’s first broadcast, half of urban families owned a radio. More than six million stations had been built. The numbers increased rapidly—by 1940, families were listening to their radios for more than four hours each day.
    Radio broadcasting has been used in the United States since the early 1920s to distribute news and entertainment to a national audience. In 1923, 1 percent of U.S. households owned at least one radio receiver, while a majority did by 1931 and 75 percent did by 1937.
     
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  4. Radio in the United States - Wikipedia

    WEBRadio broadcasting has been used in the United States since the early 1920s to distribute news and entertainment to a national audience. In …

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    • Radio | Definition, History, & Facts | Britannica

    • Timeline of radio - Wikipedia

    • Brief History Of The Radio From 1900 To 2023 …

      WEBFeb 1, 2024 · Learn how radio evolved from wireless telegraphy to internet radio over the past century. Find out who invented radio, when radio became common, and what events shaped radio technology and culture.

    • The History of the Radio Industry in the United States to 1940

    • The Development of Radio | American Experience | PBS

    • Radio - Broadcasting, Entertainment, History | Britannica

    • Why the radio is one of history’s most important …

      WEBJul 27, 2017 · As televisions and computers became common in the average home, designers created ever-more striking radios in order to find their place in people's houses. This Philippe Starck and Jerome Olivet...

    • Golden Age of American radio | Definition, Shows,

      WEBGolden Age of American radio, period lasting roughly from 1930 through the 1940s, when the medium of commercial broadcast radio grew into the fabric of daily life in the United States, providing news and entertainment to a …

    • Connecting America: The Radio at Home | DPLA

      WEBRadio signaled a major shift in how Americans communicated. Once radios became widespread and affordable, they connected people in ways never before possible. By the 1920s, a few decades after Marconi’s first …

    • Radio History: The Evolution of FM Radio - Mini-Circuits Blog

    • History of Commercial Radio | Federal Communications …

    • 7.2 Evolution of Radio Broadcasting – Understanding Media and …

    • How Radio Changed The World - Medium

    • 8 Moments When Radio Helped Bring Americans Together

    • Radio 1929-1941 | Encyclopedia.com

    • 5. Radio at Sea (1891-1922) - Early Radio History

    • The Real Reason The 1930s Were Considered 'The Golden Age …

    • The History of FM Radio: The Search For Sensational Sound

    • The history of Radio - Geek Slop

    • How Did the Radio Affect America in the 1920s? - Reference.com

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    • Movies, radio, and sports in the 1920s (article) | Khan Academy