Mathematical model

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Ingenium, 1973.0264.001
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OBJECT TYPE: N/A
DATE: 1872
ARTIFACT NUMBER: 1973.0264.001

MANUFACTURER: De Lagrange
MODEL: Hyperboloid of one sheet
LOCATION: Paris, France

More Information

General Information

Serial #: 1872-101 (Inv.)
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: WOOD/ BRASS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 29.2 cm
Width: 29.2 cm
Height: 63.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Mathematics
Category: Models
Sub-Category: N/A

Manufacturer

AKA: DeLagrange
Country: France
State/Province: Unknown
City: Paris

Context

Country: Unknown
State/Province: Unknown
Period: Unknown
Canada: In 1872 the South Kensington Museum in London UK commissioned Fabre de Lagrange of Paris to make 45 mathematical models for their Education Collection. The Canada Science and Technology Museums Corporation obtaind 28 of them from the Science Museum in 1973 through a deaccession. They still have seventeen models from the original commission.
Function: USED AS VISUAL AID FOR TEACHING DESCRIPTIVE GEOMETRY OF ENGINEERING.
Technical: When the bars are parallel the strings indicate a plane. When they are inclined to one another, but still in the same plane, the strings indicate a plane; but when the bars are not in the same plane the surface is a hyperbolic paraboloid. The surface is sometimes called a "twisted plane," but it must not be supposed that it can be made by bending a plane. On the contrary, when the surface is twisted, no two of the strings lie in the same plane, and therefore no part of the surface is plane. It can neither be flattened nor made from a plane, without stretching or contraction. The hyperbolic paraboloid is the natural surface proper for ploughshare.
Area Notes: Unknown

Details

Markings: S/N '1872-101'
Missing: N/A
Finish: WOOD BOX BASE, 11" SQ. X 9"/ COVER HAS AN 8' DIA. HOLE IN THE CENTRE/ OVER THE HOLE, MOUNTED TO A BRASS FRAME ARE 2 BRASS WHEELS 8-1/2" DIA., ONE NEAR THE TOP, THE OTHER MAY BE ADJUSTED TO ANY POINT ON THE LOWER HALF OF THE FRAME/ THREADS HANG DOWN FROM THE TOP WHEEL, THROUGH THE BOTTOM WHEEL, THROUGH THE OPENING, INTO THE BOX/ THREADS TERMINATE IN LEAD WEIGHTS/ GOOD, THREADS ARE TANGLED & SOME ARE CUT OFF
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

De Lagrange, Mathematical model, 1872, Artifact no. 1973.0264, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1973.0264.001/

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