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
Morse code is not a machine as such, but a type of language or code. It is a way to convert a written or spoken message into a signal that can be sent by anything that can send an on/off message – this could be a light flashing on and off, a buzzer turning on and off or anything similar that someone can easily tell if it is on or off.
What you are probably thinking of as a Morse code machine is the early telegraph system – this was a way of transmitting a signal in Morse code electrically down a wire, and was as simple as having a button on one end of a wire connected to a small buzzer at the other end – when the operator presses the button the person receiving the message at the other end hears a buzz or tone. By tapping the button with long and short presses you can send a signal in Morse code which the person receiving the message can hear and decode.
Because the early systems were as simple as a button and buzzer being connected together, you did need to have a continuous piece of wire running between the sender and receiver to carry the signal.
These wires were the initial part of our telephone system, creating a huge network of phone lines that could be connected together in such a way as to physically connect together a phone at each end to let them talk to each other.
Morse code was invented long before wireless communication, but when the early radio sets were developed, Morse code was often used to transmit signals as it is simple to use and very clear (assuming you know how to decode the most code signal into letters) – more complicated signals like the human voice were much more prone to getting interference and being much harder to hear at the other end.
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