Results for "Smithsonian Institution. Environmental Sciences Program"
Notes on the Operation of Telegraph Lines
- Date: c. 1850
- Creator: Vail, Alfred
- Creator: Vail, Alfred
Joseph Henry's Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Henry's Early Research in Electromagnetism
- Date: October 10, 1827
Alfred Vail's Electromagnetic Telegraph Notes
- Date: 1848
- Creator: Vail, Alfred
- Creator: Vail, Alfred
Cover of Alfred Vail's Experiment Notebook
- Date: c. 1844
- Creator: Vail, Alfred
- Creator: Vail, Alfred
Joseph Henry Appointed to Permanent Commission of the Navy
- Date: February 20, 1863 Civil War, 1861-1865
Joseph Henry Constructs an Electric Motor
- Date: April-July 1831
- SI History Chronology
"Person to Person" Telephone Exhibit Opens
- Date: December 16, 1976
Sec. Abbot and His Solar Powered Invention
- Date: September 30, 1936
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- SI History Chronology
"Invention" Airs on Discovery Channel
- Date: October 2, 1990
News Broadcast of Secretary Abbot's Solar Invention
- Date: c. September 30, 1936
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
Joseph Henry Advises Samuel Morse on Telegraph
- Date: February 24, 1842
