This brilliant engineer advanced both AM and FM radio, turning them into viable broadcast technologies, and innovated military radio uses in two World Wars.

Nikola Tesla and Thomas Edison duke it out over the best way to transmit electricity and Heinrich Hertz is the first person (unbeknownst to him) to broadcast and receive radio waves.

On This Day is an archive of significant news stories broadcast by the BBC. Link takes you to its report of the bombing of Pearl Harbor broadcast on December 7, 1941. With in-context notes to aid understanding.