Leslie Differential Thermometer
date: label: date made
content: second half of 19th century
notes: label: Description
content: This consists of two glass bulbs that are partially filled with a colored liquid, connected by a bent glass tube, and mounted on a wooden stand. When one bulb is heated more than the other, the air in that bulb will expand, causing some of the liquid to flow into the other bulb. The form was devised in the early 19th century by John Leslie, a Scottish mathematician and physicist, and soon became a popular science demonstration device. This example marked “J. W. QUEEN & CO. / PHILADA.” was used at the Naval Medical School.
label: Location
content: Currently not on view
topic: label: Subject
content: Education
label: Subject
content: Science
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Navy Department, Naval Medical School
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-02377
label: catalog number
content: M-02377
label: accession number
content: 100353
objectType: label: Object Name
content: Thermometer, Differential
label: Other Terms
content: Thermometer, Differential; Diagnostic Medicine
physicalDescription: label: Measurements
content: overall, unfolded: 11 3/8 in x 6 5/8 in x 4 1/2 in; 28.8925 cm x 16.8275 cm x 11.43 cm
label: Measurements
content: overall, folded: 4 3/4 in x 6 5/8 in x 8 in; 12.065 cm x 16.8275 cm x 20.32 cm