#
Science & Mathematics

The Museum's collections hold thousands of objects related to chemistry, biology, physics, astronomy, and other sciences. Instruments range from early American telescopes to lasers. Rare glassware and other artifacts from the laboratory of Joseph Priestley, the discoverer of oxygen, are among the scientific treasures here. A Gilbert chemistry set of about 1937 and other objects testify to the pleasures of amateur science. Artifacts also help illuminate the social and political history of biology and the roles of women and minorities in science.

The mathematics collection holds artifacts from slide rules and flash cards to code-breaking equipment. More than 1,000 models demonstrate some of the problems and principles of mathematics, and 80 abstract paintings by illustrator and cartoonist Crockett Johnson show his visual interpretations of mathematical theorems.

"Science & Mathematics - Overview" showing 2770 items.

Page 101 of 277

## Model for Descriptive Geometry by A. Jullien - Rotation of a Point about an Axis in the Horizontal Plane

- Description
- Point (m, m’) is rotated about line ab. Point n on the horizontal plane is the foot of the perpendicular from the point to line ab. Point M
_{1}is the result of rotation of the point about line nm; M_{2}is the result of rotation about line ab.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.11

- catalog number
- 1986.0885.01.11

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Image (Rotation) of a Vertical Plane about a Line in the Horizontal Plane

- Description
- Plane APA’ is a plane perpendicular to the horizontal plane with point (m, m’) on APA’ (at corner of wire). Vertical and horizontal projections are shown, as well as rotation about line AP in the horizontal plane.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.12

- catalog number
- 1986.0885.01.12

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Image (Rotation) of Any Plane

- Description
- Plane APA’ is any plane in space with point (m, m’). The two red strings, the black string and the horizontal wire are all lines on the plane. Vertical and horizontal projections are given, as well as the results of rotation of the plane about lines AP, nm, cn, and ce.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.13

- catalog number
- 1986.0885.01.13

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Intersection of Two Planes

- Description
- Planes APA’ and BQB’ (where A=B=c and A’=B’=d’) are given. Then line d’c’ is the vertical projection of the intersection of the two planes while line dc is the horizontal projection of the intersection.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.14

- catalog number
- 1986.0885.01.14

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Intersection of Two Planes with Parallel Horizontal Projections

- Description
- Planes APA’ and BQB’ are parallel in the horizontal plane (see their respective horizontal projections AP and BQ) and intersect along line (o, c’)-(d, d’) (wire). This intersection is also parallel to the horizontal projections of the two planes (observe that cd is also parallel in the horizontal plane).

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.15

- catalog number
- 1986.0885.01.15

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Intersection of Two Planes Parallel to a Line on the Ground (The x-axis)

- Description
- Planes CDD’C’ and ABB’A’ are both parallel to the x-axis (crease in the card). They intersect in line (e, e’)-(f, f’) (wire) which is also parallel to the x-axis. The planes can be visualize by imagining both red strings extending left and right. Both projections of this intersection are shown as well as the rotation of it about the horizontal line perpendicular to the x-axis PA.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.16

- catalog number
- 1986.0885.01.16

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - General Construction of the Intersection of a Line and a Plane

- Description
- The plane APA’ is intersected by line bc’ represented by the black string. The red string represents a line on the plane which bc’ intersects at point (m, m’). Horizontal and vertical projections of these lines are shown.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.17

- catalog number
- 1986.0885.01.17

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Special Case of the Intersection of a Line and a Plane

- Description
- As with relief 17, APA’ is again the plane and the red string de’ is on the plane. In this relief, the line is represented by the wire coming out of the horizontal plane and away from the vertical plane (it intersects the vertical plane below the horizontal plane). The point of intersection is at (m, m’) where the wire, the string and the bent wire meet. The horizontal and vertical projections are shown.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.18

- catalog number
- 1986.0885.01.18

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Three Points Determine a Plane

- Description
- The three points in space are represented at the bends in the three wires at points (a, a’), (b, b’) and (c, c’). The red lines connect the points in pairs showing the resulting triangle that lies on the plane that was to be constructed.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.19

- catalog number
- 1986.0885.01.19

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

## Model for Descriptive Geometry by A. Jullien - Through a Given Point Construct a Plane Parallel to Two Given Lines

- Description
- The point (m, m’) on the left side of the relief is given. On the left side, two lines are given: ab’ depicted by the black string, and dc’ (black string missing). By constructing the red lines hg’ and ef’ parallel to lines dc’ and ab’ respectively, the plane PQP’ containing the point (m, m’) is formed parallel to the two given lines.

- For more details, see COLL.1986.0885 and 1986.0885.01.01.

- Location
- Currently not on view

- date made
- ca 1880

- maker
- Jullien, A.

- ID Number
- 1986.0885.01.20

- catalog number
- 1986.0885.01.20

- accession number
- 1986.0885

- Data Source
- National Museum of American History, Kenneth E. Behring Center

- Next Page