Bladder (or Hand) Glass
notes: label: Description
content: Heavy glass vessel open at both ends, designed for use with an air pump. When the air evacuated, a bladder (or hand) put over the top opening will be drawn into the vessel. The form has been used for physics demonstrations since the eighteenth century.
label: Description
content: Ref: George Adams, <i>A Catalogue of Optical, philosophical, and mathematical instruments</i> (London, [1765]), p. 8.
label: Description
content: G. P. Quackenbos, <i>A Natural Philosophy</i> (New York, 1860), pp. 180-181.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Gift of Barbara A. Keppel
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1985.0311.303
label: catalog number
content: 1985.0311.303
label: accession number
content: 1985.0311
objectType: label: Object Name
content: bladder (or hand) glass
physicalDescription: label: Measurements
content: overall: 7 1/2 in x 5 1/2 in; 19.05 cm x 13.97 cm
label: Measurements
content: overall: 7 3/4 in x 6 in; 19.685 cm x 15.24 cm