HOW THEY MADE A MORSE CODE MACHINE Samuel F.B. Morse and Alfred Vail developed an electric telegraph which sent pulses of electrical current to control an electromagnet that was located at the receiving end of the telegraph wire.
Dr. David Alter invented the telegraph during the year of 1836, although Samuel Morse made several key developments in the invention.
THe telegraph key is a switch. Tapping it closes a circuit and send a pulse of electricity down the line. These taps are used to code messages.
telegraph was an old machine invented by Thomas Edison, to talk to each other.
china
every one back in the old days
Dr. David Alter invented the telegraph during the year of 1836, although Samuel Morse made several key developments in the invention.
Many early telegraph cables were made of iron wire, but all modern ones are copper.
1837
telegraph
Italy
Mistake