Welcome to the alphabetical walkthrough of pioneers and personalities. You're now on letter H. Click through the rest of the alphabet to find out more about the people who've helped shape telecommunication as we know it today.
Oliver Heaviside was a genius who provided the theory for long-distance telephones and predicted the existence of the ionosphere.
Heinrich Hertz was the first man to transmit an electrical current between two points without using a wire, paving the way for radio.
Gardiner Hubbard was a founding partner of the Bell Telephone Company alongside Alexander Graham Bell and Thomas Sanders, later becoming president of the National Geographic Society.
David Hughes created the first mechanism for printing telegraph messages in words rather than dots and dashes.
Henry Hunnings developed significant improvements to the voice transmitters in telephones.
Alexander Graham Bell went to the United States as a teacher, rather than as an inventor. His lectures in teaching the deaf won him many friends - including a Boston attorney Gardiner Green Hubbard.
Visit the updated Communicate! galllery at the National Museum of Scotland.
Discover the records behind the history of telecommunications as BT Heritage launches online catalogue.
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