Number of Images: 1; Color: Color; Size: 17w x 10h; Type of Image: Document; Medium: Paper
Type:
Document
Paper
Place:
United States
Date:
1848
Category:
Historic Images of the Smithsonian
Notes:
Alfred Vail was a key partner to American inventor Samuel Morse and is credited with designing the machine and alpha code used in the creation of the electromagnetic telegraph.
For other materials relevant to Vail's work, see Negative Numbers SIA2011-0824, SIA2011-0825, and SIA2011-0827 to SIA2011-0830. For letters between Vail, Morse, and first Smithsonian Secretary Joseph Henry, see Negative Numbers SIA2011-0814 to SIA2011-0823.
Summary:
The page on the left contains Alfred Vail's notes about magnetic forces and magnetism in relation to the electromagnetic telegraph. The page on the right is a diagram drawn by Vail of the telegraph line between Pittsburgh, Pennsylvania and Washington , D.C.
Contained within:
Smithsonian Institution Archives, Record Unit 7055, Box 5, Folder: 4
