Episode 5: The telegraph is not what you think
Manage episode 373442694 series 3499864
We promise you; you don’t know what the telegraph is. You think you know, but did you know the first telegraphs had no wires? Did you know they used 30-foot tall towers with people standing on top of them? Did you know that electrical telegraphs were originally discovered thanks to a frog leg?
19 episodes