Results for "Smithsonian Institution. Office of the Secretary. Assistant to the Secretary"
Joseph Henry's Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Sketch of Henry Magnet
- Date: 1857
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Joseph Henry Testifies for Morse v. O'Reilly Telegraph Patent Case
- Date: September 7, 1849
Joseph Henry Begins His "Record of Experiments"
- Date: August 15, 1834
Reconstruction of Joseph Henry's Original Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
Joseph Henry's Albany Magnet with its Battery and Apparatus for Measuring its Strength
- Date: 1831
- Creator: Unknown
- Creator: Unknown
Notes on the Operation of Telegraph Lines
- Date: c. 1850
- Creator: Vail, Alfred
- Creator: Vail, Alfred
Sketch of Joseph Henry's More Powerful Magnet
- Date: 1857
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Joseph Henry Constructs Large Electromagnet for Yale College Professor Benjamin Silliman
- Date: January 15, 1831
Smithsonian Replica of Joseph Henry's Princeton Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
Joseph Henry's Letter to Harriet Henry (July 14, 1848)
- Date: July 14, 1848
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Joseph Henry Electromagnet
- Date: c. 1978
