Diffusion Pump (Replica)


Irving Langmuir (1881-1957) received a PhD in chemistry at Gottingen in 1906 and joined the scientific staff at the General Electric Research Laboratory in Schenectady, New York, in 1909. While studying light bulbs, he made important improvements to the diffusion pump, and these ultimately led to the invention of the high-vacuum rectifier and amplifier tubes.

This is a glass replica of Langmuir’s first diffusion pump. The "WILMAD GLASS CO., INC. LANDISVILLE, N.J.” inscription refers to a precision glass firm that was in Landisville by 1951, and in Buena by 1970. It now does business as Wilmad-LabGlass.

Ref: B. B. Dayton, “History of the Development of Diffusion Pumps,” pp. 107- in Paul A. Redhead, ed., Vacuum Science and Technology. Pioneers of the 20th Century (1994).

Location: Currently not on view

See more items in: Medicine and Science: Physical Sciences


Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.315951Catalog Number: 315951Accession Number: 222955

Object Name: diffusion pump (replica)

Measurements: overall: 34 1/2 in x 10 3/4 in x 4 in; 87.63 cm x 27.305 cm x 10.16 cmoverall: 11 in x 34 1/2 in x 4 in; 27.94 cm x 87.63 cm x 10.16 cm

Guid: http://n2t.net/ark:/65665/ng49ca746aa-475a-704b-e053-15f76fa0b4fa

Record Id: nmah_1184222

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