Helium Discharge Tube
notes: label: Description
content: 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.
label: Description
content: 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).
label: Description
content: 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).
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2001.0162.14
label: catalog number
content: 2001.0162.14
label: accession number
content: 2001.0162
objectType: label: Object Name
content: helium discharge tube
physicalDescription: label: Measurements
content: 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