How did Morse code machines connect and send electromagnetic pulses over long distances?

Question

They aren’t connected via a very long wire, are they?

P.S I’d like to understand the physics behind it, not how Morse code works.

In: Technology

Answer 1

There’s no such thing as a “morse code machine”. Morse code is just how information is encoded in the transmission. What you’re asking about is telegraphy. Up until around 1910, telegraphy absolutely did use long wires, just like landline phones. Around that time, wireless telegraphy was invented, that used radio waves to transmit signals, much like a walkie talkie or mobile phone.