Model of Normal Planes of Chord of Screw by Richard P. Baker, Baker #436
date: label: date made
content: ca 1906-1935
name: label: maker
content: Baker, Richard P.
notes: label: Description
content: This geometric model was made by Richard P. Baker in the early twentieth century when he was on the faculty in mathematics at the University of Iowa. Baker believed that models were essential for the teaching of many parts of mathematics and physics, and over 100 of his models are in the museum collections.
label: Description
content: The model has a wooden base painted black, with a painted metal wire extending up for the base. Two metal pieces that would attach to this support are disconnected. A mark reads: No. 436 (/) Normal Planes, Chord of Screw .
label: Description
content: Baker built nine models to correspond to figures described by the German mathematician Eduard Study in a book on the geometry of dynamics (shortened by Baker to Dynamen). This model is one of them, which he described in his 1931 catalog as representing “normal planes of chord of screw.”
label: Description
content: References:
label: Description
content: Baker, R.P., <I>Mathematical Models</I>, Iowa City, 1931, p. 16.
label: Description
content: Study, E., <I>Geometrie der Dynamen: Die Zusammensetzung von Kräften und Verwandte Gegenstände der Geometrie Bearb.</I>, Leipzig: B.G. Teubner, 1903, esp. p. 18, Fig. 3.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Frances E. Baker
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.211257.087
label: accession number
content: 211257
label: catalog number
content: 211257.087
objectType: label: Object Name
content: geometric model
physicalDescription: label: Physical Description
content: beige (overall color)
label: Physical Description
content: black (overall color)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: support bolted through base. (overall production method/technique)
label: Measurements
content: average spatial: 16.8 cm x 14.2 cm x 14.3 cm; 6 5/8 in x 5 19/32 in x 5 5/8 in