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A telegraph key, a spool of wire, a ceramic insulator, and a roll of paper tape with Morse code.

How fast can you tap through the history of wire signals in this Telegraph quiz?

Electric Inventions

Difficulty

Hard

Questions

20

Volts

3/q

Morse tapped out 'What hath God wrought' and changed the world in a heartbeat. From the first clicks in 1844 to the wires that bridged oceans, the stakes were speed and silence. Think you can decode the history of the original instant message? Step up and prove it.