*Guglielmo Marconi,* was an Italian inventor and electrical engineer, known for his pioneering work on long-distance radio transmission, development of _Marconi's law,_ and a radio telegraph system. He is credited as the inventor of _radio,_ and he shared the 1909 *Nobel Prize* in Physics with Karl Ferdinand Braun _"in recognition of their contributions to the development of wireless telegraphy"._
*Wireless telegraphy* means transmission of telegraph signals by radio waves; a more specific term for this is _radiotelegraphy._ Before about 1910 when radio became dominant, the term wireless telegraphy was also used for various other experimental technologies for transmitting telegraph signals without wires, such as electromagnetic induction, and ground conduction telegraph systems.
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