Results for "Smithsonian Institution. Acting Assistant Secretary for Science"
Alfred Vail's Letter to Joseph Henry (July 17, 1846)
- Date: July 17, 1846
- Creator: Vail, Alfred,Joseph Henry Papers Project
- Creator: Vail, Alfred,Joseph Henry Papers Project
Morse Claims Henry's Work in Electromagnetism Did Not Contribute to Invention of Telegraph
- Date: July 19, 1854
Letter from Samuel Morse to Alfred Vail, January 15, 1857
- Date: January 15, 1857 19th century
- Creator: Morse, Samuel Finley Breese 1791-1872
- Creator: Morse, Samuel Finley Breese 1791-1872
Replica of Joseph Henry's Princeton Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
Joseph Henry's Yale Magnet
- Date: 1974
- Creator: Harrell, Alfred
- Creator: Harrell, Alfred
Joseph Henry's Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Drawing of the Electromagnetic Telegraph and Alpha Code
- Date: c. 1844
- Creator: Vail, Alfred
- Creator: Vail, Alfred
Sketch of Circuits Using One Battery
- Date: April 15, 1844
- Creator: Vail, Alfred,Morse, Samuel Finley Breese 1791-1872
- Creator: Vail, Alfred,Morse, Samuel Finley Breese 1791-1872
Alfred Vail's Drawing of Many Circuits with One Battery
- Date: c. 1844
- Creator: Vail, Alfred
- Creator: Vail, Alfred
Joseph Henry Advises Samuel Morse on Telegraph
- Date: February 24, 1842
Joseph Henry's Albany Magnet with its Battery and Apparatus for Measuring its Strength
- Date: 1831
- Creator: Unknown
- Creator: Unknown
Joseph Henry's Letter to John R. Henry (July 9, 1831)
- Date: July 9, 1831
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
