Question

How did Guglielmo Marconi advance radio technology?

He invented the first machine that could transmit sound through wires.
He discovered that messages could be sent without physical travel.
He discovered that sound could be transmitted using radio waves instead of electric wires.
He created NBC, the first broadcast company.

Answer 1

Italian inventor and engineer Guglielmo Marconi (1874-1937) developed, demonstrated and marketed the first successful long-distance wireless telegraph and in 1901 broadcast the first transatlantic radio signal. ... In 1909 he shared the Nobel Prize in Physics for his radio work.

Answer 2

Guglielmo Marconi invented the first machine that could transmit sound through wires.

Step-by-step explanation:

Guglielmo Marconi was an Italian inventor, entrepreneur and politician.

To him we owe the development of an effective system of communication with wireless telegraphy via radio waves or radio telegraph which achieved considerable diffusion, whose evolution led to the development of modern radiocommunication systems and methods, television and in general all the systems that use wireless communications, which earned him the Nobel prize for physics in 1909.