inductance coils
Datecirca 1927
Inventory Number0478
ClassificationInduction Coil
Subject
Maker
Department of Physics, Harvard University
founded 1884
User
Department of Physics, Harvard University
founded 1884
Cultural Region
Place of Origin
Place of Use
Dimensions22.5 × 55 × 15 cm (8 7/8 × 21 5/8 × 5 7/8 in.)
Material
DescriptionFrom Instrument Card: "Variable Coupling Coils...2 vertical coils, one fixed, and the other rotating and sliding, mounted on a rectangular wood base. The sliding coil is on a rabit. On the base is a metric scale. Two bingding posts are attached to the frame of the sliding coil, while the fixed coil has two binding posts near it on the base."
Signedunsigned
Inscribedon movable coil: S;
on fixed coil: P
FunctionProbably for demonstration of electromagnetic induction. One can vary the distance between the coils.
ProvenanceFrom the Harvard University Physics Department.
Historical AttributesThe blue triangle indicates that it was used for teaching in the Physics 3 course, Physics Department, Harvard University. Card dates the course 1927.
From Instrument Card:
"Parts taken from commercial apparatus and remounted in Jefferson Shop."
Department of Physics, Harvard University
Date: circa 1895
Accessories: goes together with coil # 0493
Object number: 0494
Department of Physics, Harvard University
Date: circa 1895
Accessories: goes together with coil # 0494
Object number: 0493
Department of Physics, Harvard University
Date: 1930-1940
Accessories: bakelite case
Object number: 0448
Department of Physics, Harvard University
Date: late 19th-early 20th Century
Object number: 0148
Department of Physics, Harvard University
Date: mid 20th-late 20th Century
Accessories: variety of spare coils (in 2004-1-0408c); samples to be placed inside coil (2004-1-0410)
Object number: 2004-1-0408b
Department of Physics, Harvard University
Date: 1890-1930
Accessories: extra set of coils without multi-tap windings (0156d, e); extra magnet; square wooden case
Object number: 0156b
Department of Physics, Harvard University
Date: late 19th-early 20th Century
Object number: 0504