JEREMY'S MORSE CODE TELEGRAPH
Jeremy is a 8th grader. For his final history class project, he decided to make a telegraph. He started by cutting wood blocks to form the transmitter and receiver and actually built a working prototype.
Watch the telegraph in action.
When you hit the transmitter head, battery powered circuit closes and transforms electricity to magnetic field that draws the receiver head down to click the base. When you release at the transmitter side, the receiver lifts up free.