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The Telegraph
Key
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Introduction
The telegraph was
the only long distance instant communication device
until radio and other means came along. A telegraph key
was the tool used to send coded messages, but why
are there so many different models
of telegraph
keys? What are the differences? What do they do?
Can we just use any key as a telegraph key? What
caused developing so many different designs? |
![[Telegraph Key]](images/EX055.jpg) |
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Material and instructions
The
purpose of this project is to investigate and make a close
observation of different telegraph keys and build a simple
working model of a telegraph key. |
Details
of this project
More information or support for this project is available at
members section of ScienceProject.com. You may also find a
Science kit for this topic at MiniScience.com. |
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