Geometric Model by A. Harry Wheeler, Spherical Angle and Its Measure
date: label: date made
content: 1916
name: label: maker
content: Wheeler, Albert Harry
notes: label: Description
content: The angle between two great circles on a sphere is defined to be equal to the angle between the lines tangent to the circles at their point of intersection. This cut and folded tan paper model of a sphere shows two intersecting great circles and tangents to them. It is among the models Wheeler dubbed collapsible.
label: Description
content: A mark on the model reads: Spherical Angle (/) and its (/) Measure (/) A. Harry Wheeler (/) 1916. Another mark reads: A. Harry Wheeler (/) 1916.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Worcester
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Trigonometry
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content: Science & Mathematics
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content: Spherical Trigonometry
creditLine: label: Credit Line
content: Gift of Helen M. Wheeler
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.304723.156
label: accession number
content: 304723
label: catalog number
content: 304723.156
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: tan (overall color)
label: Physical Description
content: cut and folded (overall production method/technique)
label: Measurements
content: average spatial: 10 cm x 10.7 cm x 10 cm; 3 15/16 in x 4 7/32 in x 3 15/16 in