Sketch of Henry Magnet

ID: SIA2012-7649

Creator: Henry, Joseph 1797-1878

Form/Genre: Drawing

Date: 1857

Citation: Annual Report of the Board of Regents of the Smithsonian Institution Showing the Operations, Expenditures, and Condition of the Institution for the Year 1857, (Washington, DC: William A. Harris, Printer, 1858), 101

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Summary

Sketch of Joseph Henry's magnet. Henry, first Secretary of the Smithsonian Institution, was the first to construct an electromagnet formed by tightly wrapping multiple coils of an insulated conducting wire around an iron bar. This technique improved upon the earlier work of William Sturgeon, increasing the magnetic power.

Subject

  • Sturgeon, William 1783-1850
  • Smithsonian Year

Category

Historic Images of the Smithsonian

Notes

This image was scanned from page 101 of the Smithsonian Annual Report for 1857.

Contained within

Annual Report of the Board of Regents of the Smithsonian Institution Showing the Operations, Expenditures, and Condition of the Institution for the Year 1857, (Washington, DC: William A. Harris, Printer, 1858), 101

Contact information

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

Date

1857

Restrictions & Rights

No restrictions

Topic

  • Scientific apparatus and instruments
  • Secretaries
  • Inventions
  • Science
  • Electromagnets
  • Magnets
  • Electromagnetism

Place

United States

Form/Genre

  • Drawing
  • Paper

ID Number

SIA2012-7649

Physical description

Number of Images: 1 ; Color: Black and White ; Size: 5.5w x 9h ; Type of Image: Drawing ; Medium: Paper

Full Record

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