Sheet, Shortcuts in Use of Slide Rule
date: label: date made
content: 1937-02
notes: label: Description
content: In the 1930s, engineers shared shortcuts for carrying out calculations on a slide rule. In this letter cut from the journal <I>Civil Engineering</I>, Donald D. Curtis, professor of mechanics and hydraulics at Clemson College in Clemson, south Carolina, described methods of finding the square root of the sum of two squares and the square root of the difference of two squares. His approach was a variation on a method proposed by another engineer in the December issue of the magazine.
label: Location
content: Currently not on view
place: label: place made
content: United States: South Carolina, Clemson
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
label: See more items in
content: Slide Rules
creditLine: label: Credit Line
content: Gift of William J. Ellenberger
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1981.0933.08
label: accession number
content: 1981.0933
label: catalog number
content: 1981.0933.08
objectType: label: Object Name
content: sheet
physicalDescription: label: Physical Description
content: paper (overall material)
label: Measurements
content: overall: 11.3 cm x 14.3 cm; 4 7/16 in x 5 5/8 in