Number of Images: 1; Color: Color; Size: 8w x 4.25h; Type of Image: Document; Medium: Paper
Type:
Document
Paper
Place:
United States
Date:
April 15, 1844
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 to SIA2011-0829. For letters between Vail, Morse, and first Smithsonian Secretary Joseph Henry, see Negative Numbers SIA2011-0814 to SIA2011-0823.
Summary:
Alfred Vail's sketch is a diagram of one of his experiments. This diagram shows Vail's attempt to connect multiple circuits with one battery and one wire. At the bottom of the letter Samuel Morse has written: "This is Mr. Vail's arrangement. August 16th 1844."
Contained within:
Smithsonian Institution Archives, Record Unit 7055, Box 5, Folder: 6
