25/04/1874 Italian inventor Guglielmo Marconi is born
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Guglielmo Marconi Wireless Telegraphy
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Guglielmo Marconi Biography
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The Inventor of the Radio - Guglielmo Marconi: Great Scientists on One Stop Science Shop
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Great Innovators: "Marconi and the Radio," by StoryBots
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Guglielmo Marconi
Marconi is usually credited as the inventor of the radio, although he had many predecessors and contemporaries who worked on similar devices. Marconi built the first radio telegraph system and formulated a law describing a relation between the height of antennas and maximum signaling distance of radio transmissions.