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Morse-Vail Telegraph Key
- Topic
- Manufacturing industries
- museum
- National Museum of American History
- objectType
- telegraph transmitter
- Date
- 1844年
- Creator
- Morse, Samuel Finley Breese
Alfred Vail made this key, believed to be from the first Baltimore-Washington telegraph line, as an improvement on Samuel Morse's original transmitter. Vail helped Morse develop a practical system for sending and receiving coded electrical signals over a wire, which was successfully demonstrated in 1844.