First Measurements of Hydrogen Absorption in the Spectrum of a Radio Source

Description:

Paper graph showing hydrogen absorption in the spectrum of a radio source, obtained with the 50-foot radio telescope at the Naval Research Laboratory in Washington, D.C.

Ref: John Peter Hagen, A. Edward Lilley, and Edward F. McClain, "Absorption of 21-CM Radiation by Interstellar Hydrogen," The Astrophysical Journal 122 (Nov. 1955): 361-374.

Location: Currently not on view

See more items in: Medicine and Science: Physical Sciences

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.325761Catalog Number: 325761Accession Number: 257196

Object Name: graph

Measurements: overall: 9 1/2 in x 12 in; 24.13 cm x 30.48 cm

Guid: http://n2t.net/ark:/65665/ng49ca746b2-a19a-704b-e053-15f76fa0b4fa

Record Id: nmah_1823136

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