Wallace-Farmer plate-type arc lamp
date: label: date made
content: 1877
name: label: associated person
content: Wallace
label: maker
content: Wallace, William
notes: label: Description (Brief)
content: An early carbon arc lamp using two flat plates instead of the more common design using two rods. Touching the plates and then retracting them slightly initiates the arc as usual. The arc travels horizontally, back and forth along the edges between the plates, consuming the plates as it moves. This design allows for a more compact lamp. Distance between the plates is regulated by a solenoid as with lamps using rods.
setName: label: See more items in
content: Work and Industry: Electricity
label: Exhibition
content: Lighting a Revolution
label: Exhibition Location
content: National Museum of American History
creditLine: label: Credit Line
content: from International Business Machines, Inc., William J. Hammer Collection
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320900
label: catalog number
content: 320900
label: accession number
content: 241402
objectType: label: Object Name
content: Arc Lamp
label: Other Terms
content: Arc Lamp; Lighting Devices
physicalDescription: label: Measurements
content: overall: 14 1/2 in x 14 in x 2 in; 36.83 cm x 35.56 cm x 5.08 cm