Seismograph
notes: label: Description
content: In the 1970s, James D. Lehman, a laboratory technician in the physics department at James Madison University, developed a seismograph that was simple enough for students and amateurs to make, and sensitive enough to detect earthquakes and underground nuclear tests. This is that instrument.
label: Description
content: Ref: James D. Lehman, “Practical seismograph tracks tremors,” <i>The Science Teacher</i> 44 (Nov. 1977): 43-45.
label: Description
content: Jearl Walker, “How to build a simple seismograph to record earthquake waves at home,” <i>Scientific American</i> 241 (July 1979): 152-161.
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1984.0017.01
label: catalog number
content: 1984.0017.01
label: accession number
content: 1984.0017
objectType: label: Object Name
content: seismic system sensor
physicalDescription: label: Measurements
content: overall: 21 in; 53.34 cm
label: Measurements
content: base: 1 1/8 in x 10 3/8 in x 17 15/16 in; 2.8575 cm x 26.3525 cm x 45.56125 cm