I think is the alternate current and the Tesla coil. The coil is the basis of anything wireless.
Because he made many important contributions to science.
Nikola Tesla is known as the father of current. Tesla is made contributions to the modern alternating current of electricity.
Nikola Tesla
I feel that Nikola Tesla enjoyed his worked inventions and took pride in them. No where in history, Nikola Tesla stated he prefered a specific invention.
I made a presentation on Nikola Tesla which has the information you need in the related links box below. I resorted to make a presentation because most Teslas question need a lot of explaining. I hope you learn from this presentation.
1891.
Yes actually, it is. It was made by Nikola Tesla (who IS A GUY), thus having the name Tesla. :)
Actually, no one person invented it. Several inventors made important contributions. Today, most historians credit Guglielmo Marconi with inventing what became radio (it was originally called "wireless"); but some people say Nikola Tesla was equally important.
Nikola Tesla was greatly influenced by Vedic philosophy, and thus the realisation that Reality is a Dynamic Unity.
Nikola Tesla never made a second tour for electricity. He only did one tour which lasted his whole life.
It was called the Oscillator
Nikola Tesla