ballistic pendulum
Inventory Number2023-1-0021
ClassificationPendulum
Maker
Department of Physics, Harvard University
founded 1884
Dimensions15 × 21 × 10.3 cm (5 7/8 × 8 1/4 × 4 1/16 in.)
DescriptionCylindical bob filled with wooden pellets. Used in experiments where a rifle is shot by students through a blast screen (paper) and into one end of the cylinder. Its motion away from the blast impact is then a representation of kinetic energy. Two hooks on top of the cylinder are attached to a bifilar wire system, ensuring the linear movement of the cylinder (and preventing it from rotating).
Central Scientific Company
Date: 1940-1950
Accessories: data card (in instrument's file); brass sphere
Object number: 1998-1-0036
Department of Physics, Harvard University
Object number: 2023-1-0023
Department of Physics, Harvard University
Object number: 2023-1-0025
American Association of Physics Teachers
Date: dated 1937
Accessories: black leather case, for storage
Object number: 1998-1-1325
Harvard Project Physics
Date: 1962-1972
Accessories: in box tied with strings, with physics diagram (RS 1471)
Object number: RS1470
Department of Psychology, Harvard University
Date: 1960-1970
Object number: WJ1093
Jean-Gabriel-Auguste Chevallier
Date: 1830-1848
Accessories: cork-like wooden object; wooden case
2 wooden "fins" (possibly part of case)
4 mounting screws
1 small brass mounting object
1 brass key-like object
Object number: 1998-1-1248
Department of Physics, Harvard University
Date: 1930-1960
Accessories: Index of slides is saved as Excel file "index to drawers" on CHSI 3 and CHSI 9.
Object number: 2002-1-0099f
Department of Physics, Harvard University
Date: circa 1940
Object number: RS0315
Department of Physics, Harvard University
Date: circa 1940
Object number: HA0107