Who among the following transmitted first radio signal through air?

Guglielmo Marconi is most commonly credited with sending and receiving the first airwaves through space, wiring 1.5 miles in 1895, followed by the first transatlantic radio transmission in 1901. Although Heinrich Hertz had proven the existence of electromagnetic waves in the late 1880s, and Nikola Tesla had proposed the idea of wireless communication in 1893, it was Marconi who developed the first practical long-distance, commercially viable wireless telegraphy system, which earned him the Nobel Prize in Physics in 1909.