Homemade glass plate condenser
date: label: date made
content: ca 1930
name: label: maker
content: Wingard, Franklin
notes: label: Description (Brief)
content: Homemade glass plate condenser for amateur radio use. Later called a capacitor these devices store an electrical charge. Consists of three pieces of window glass (1 double-strength, 2 single-strength), with 2 metal inserts each connected to a contact. One insert is set between each glass pane, one insert is metal foil, the other is metal mesh. Two bands of tar tape holds panels together. Flat plate condensers were first invented by Benjamin Franklin around 1749 as a variation of the Leyden jar.
setName: label: See more items in
content: Work and Industry: Electricity
label: Exhibition
content: The Electric Dr. Franklin
label: Exhibition Location
content: National Museum of American History
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.241556.011
label: accession number
content: 241556
label: catalog number
content: 241556.011
objectType: label: Object Name
content: fixed capacitor
physicalDescription: label: Measurements
content: overall: 4 5/8 in x 7 1/2 in x 1/2 in; 11.7475 cm x 19.05 cm x 1.27 cm