Historical contribution
What Vail contributed
Samuel Morse, Alfred Vail and collaborators developed a single-wire recording and coded system in the United States. The 1844 Washington-Baltimore demonstration transmitted “What hath God wrought?” on paper tape and helped secure public and commercial legitimacy.
Why it mattered
Separates long-distance signal speed from transport and visibility.
Connected topics
Where this fits in ITEM
Evidence
Sources and further reading
- Cooke and Wheatstone five-needle telegraph, 1837:
Science Museum Group · 1837
- First telegraph message paper tape, 24 May 1844:
Library of Congress · 1844
- Invention of the Telegraph:
Library of Congress