Model for Descriptive Geometry by A. Jullien - Angle of a Plane with Planes of Projection

Set of Geometric Models by A. Jullien, Relief 24

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Object Details

maker

Jullien, A.

Description

Given plane APA’, c’ is a point on the intersection line of the plane with the vertical plane. Point b on the horizontal intersection of the plane is chosen so it that bc’ is perpendicular to PA. Connect b and c’ to from the red string. The horizontal projection of bc’ is bc and the vertical projection is cc’. By rotating bc’ about bc to the horizontal, point C₁ is found. Now angle cbC₁ is the angle of the plane with the horizontal plane. Similarly, the angle bC₁C is the angle with the vertical plane.

For more details, see COLL.1986.0885 and 1986.0885.01.01.

Location

Currently not on view

date made

ca 1880

ID Number

1986.0885.01.24

catalog number

1986.0885.01.24

accession number

1986.0885

Object Name

geometric model

Physical Description

paper (overall material)

metal (overall material)

Measurements

overall: 6.5 cm x 7.5 cm x 6.5 cm; 2 9/16 in x 2 15/16 in x 2 9/16 in

place made

France: Île-de-France, Paris

See more items in

Medicine and Science: Mathematics

Science & Mathematics

Jullien Geometric Models

Data Source

National Museum of American History

Subject

descriptive geometry

Metadata Usage

CC0

Link to Original Record

https://n2t.net/ark:/65665/ng49ca746b2-d45b-704b-e053-15f76fa0b4fa

Record ID

nmah_1802211