Henry's Early Research in Electromagnetism

ID:

Creator:

Form/Genre:

Date: October 10, 1827

Citation:

Close
Usage Conditions Apply
The Smithsonian Institution Archives welcomes personal and educational use of its collections unless otherwise noted. For commercial uses, please contact photos@si.edu.
Download IIIF Manifest Request permissions Download image Print

Narrow Your Results

Reset

Filter Your Results

Smithsonian Secretaries Information

Close Browse records and papers of the Smithsonian Secretaries, from 1846 until today. Pre-set filters help narrow searches by individuals who have held that office.

Expeditions Information

Close Browse records and papers documenting scientific and collecting expeditions either affiliated with the Smithsonian, or with which Smithsonian researchers participated. Pre-set filters help narrow searches by geographic regions predominantly represented in expedition records.

Professional Societies Information

Close Browse records of professional societies closely associated with the Smithsonian, that focus on areas of scientific research and museum studies. Pre-set filters help narrow searches by major topics and disciplines.
 

Summary

Joseph Henry presents his first contribution to electrical science entitled, "On some Modifications of the Electro-Magnetic Apparatus," at a meeting of the Albany Institute. He becomes the first to construct an electromagnet formed by tightly wrapping multiple coils of an insulated conducting wire around an iron bar. He will demonstrate the difference between this electromagnet, a "quantity" magnet, and the type devised by Gerard Moll of Holland in 1830, which relied on only a single coil. Henry also experiments with the effects of a continuous coil of very great length, or "intensity" magnet, and will publish these experiments in 1831. In 1831, Henry and Michael Faraday will independently induce electrical currents by charging magnetic forces, although Faraday will publish his results first.

Subject

  • Faraday, Michael 1791-1867
  • Henry, Joseph 1797-1878
  • Moll, Gerard 1785-1838
  • Albany Institute

Category

Chronology of Smithsonian History

Notes

  • Image is of Henry's Albany magnet created in the 1820s, Smithsonian Institution Archives, negative number 39,040.
  • Smithsonian Miscellaneous Collections, vol. 21, no. 356, Article III. "A Memorial of Joseph Henry," including Obsequies, Memorial Exercises at the Capitol and Memorial Proceedings of Societies. Washington: Smithsonian Institution, 1881, p. 212-237.
  • Reingold, Nathan, ed. The Papers of Joseph Henry, The Albany Years, December 1797 - October 1832, vol. 1. Washington, D.C.: Smithsonian Institution Press, p. 201, 312, 316-320, 335-426.

Contact information

Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520, SIHistory@si.edu

Date

October 10, 1827

Topic

  • Electric apparatus and appliances
  • Magnetic induction
  • Inventors
  • Lectures and lecturing
  • Secretaries
  • Inventions
  • Electromagnets
  • Museums
  • Magnets
  • Experiments
  • Physics
  • Electromagnetism
  • Physics--Experiments
  • Museum publications
  • Research

Full Record

View Full Record