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Wireless Telegraphy
Scientists did experiments on transmissions through the ground, water, and over train tracks -
David Edward Hughes
the first intentional transmission of a signal by means of electromagnetic waves -
Heinrich Rudolf Hertz
able to conclusively prove transmitted airborne electromagnetic waves -
Guglielmo Marconi
built the first complete, commercially successful wireless telegraphy system based on airborne Hertzian waves (radio transmission) -
Reginald Fessenden
used a synchronous rotary-spark transmitter for the first radio program broadcast, from Ocean Bluff-Brant Rock, Massachusetts. -
Harold Power
broadcast the first continuous broadcast in the world from Tufts University under the call sign 1XE (it lasted 3 hours). The company later became the first to broadcast on a daily schedule, and the first to broadcast radio dance programs, university professor lectures, the weather, and bedtime stories. -
Commercial Broadcasting
the broadcasting of television programs and radio programming by privately owned corporate media, as opposed to state sponsorship. -
Edwin H. Armstrong
Created the first FM radio -
James Clerk Maxwell
This scientist showed through mathematical form that electromagnetic waves could propagate through free space. -
Streaming
used to distribute Internet radio, typically using a lossy audio codec. Streaming audio formats include MP3, Ogg Vorbis, Windows Media Audio, RealAudio, and HE-AAC (or aacPlus)
