Guglielmo Marconi performed the first wireless radio transmission in 1895, calling it "telegraphy without cables."

Marconi was just 21 years old when he demonstrated that electromagnetic waves could carry information without physical wires. His first successful experiment transmitted signals from the Isle of Wight, England, to a tugboat 28 km out at sea.

What made this revolutionary wasn't just the technology. It was the proof of concept that information could travel through thin air. Before Marconi, every form of long-distance communication required a physical connection, whether copper wire for telegraph or undersea cables.

Key milestone: This 1895 demonstration is considered the birth of wireless communication, the ancestor of every mobile network we use today.

Tip: Think of Marconi as the "grandfather of mobile." No Marconi, no mobile phones.

Go deeper:

• Guglielmo Marconi (Wikipedia) — full biography with dates and milestones of his early wireless experiments.