Working of Telegraph
The telegraph was the only long distance instant communication device until radio and other means came along.
An electric signal, later converted to sound or marks on a paper was the base for such communication. Skilled telegraph operators have done this for many years.
Material and instructions
In this project you will see how a telegraph works. You will learn about Morse code and how it is generated and interpreted. As a part of the experiments for this project, you may also want to make a simple working model of a telegraph set.
Details of this project
More information or support for this project is available at members section of You may also find a Science kit for this topic at