Helium Discharge Tube

Description:

Helium discharge tube from the physics department at Columbia University. A paper label reads “GENERAL PHYSICAL LABORATORIES / 509 FIFTH AVE., N.Y.C. / Tube No. 7A Helium 9 mm." The director of this organization was Charles W. Homan.

Ref: Charles W. Homan, “Insulator Material for Neon Sign Electrodes,” U.S. Patent 2,443,617 (June 22, 1948), assigned to Samuel C. Miller (of New York).

Charles W. Homan, “Method of Making Electrode Spacer Material and Resultant Article and Electrode,” U.S. Patent 2,443,618 (June 22, 1948), assigned to Samuel C. Miller (of New York).

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: 2001.0162.14Catalog Number: 2001.0162.14Accession Number: 2001.0162

Object Name: helium discharge tube

Measurements: overall: 9 1/2 in x 1 1/4 in x 3/4 in; 24.13 cm x 3.175 cm x 1.905 cm

Guid: http://n2t.net/ark:/65665/ng49ca746aa-380c-704b-e053-15f76fa0b4fa

Record Id: nmah_1184172

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