How the Morse Telegraph works|
- The key is pressed to start communication and allow current to flow into the coil of the receiving machine.
- The iron rod within the coil is magnetized, and attracts the iron leaf.
- The key is released, shutting off the current, and the spring forces the iron leaf away from the iron bar.
- This movement of the iron leaf leaves a record on paper tape. At first a needle was pressed into the paper to emboss the record, but later versions used a pen or a tone (acoustic device) for recording. Diagram