induction coils
Datecirca 1880
Inventory Number0477
ClassificationInduction Coil
Subject
Maker
T. Sauerwald
Cultural Region
Place of Origin
Dimensions13.2 × 33.7 × 14.4 cm (5 3/16 × 13 1/4 × 5 11/16 in.)
Material
DescriptionFrom Instrument Card: "Two small coils, one fixed and turning, 2 1/4" in diameter, the other sliding and turning, on 3 1/2" form. Both are mounted on a wood base in a dovetail groove. There is a brass (screw) on one side marked 5 - 0 - 5. There are 4 brass leveling screws"
SignedOn scale: "T. SAUERWALD / IN BERLIN"
FunctionProbably for demonstration of electromagnetic induction. One can vary the distance between the coils.
ProvenanceFrom Harvard University Physics Department. Was stored in the Cruft Laboratory attic.
American
Date: late 19th-early 20th Century
Accessories: 2nd induction coil - 367b
Object number: 0367a
F. Sauerwald
Date: circa 1870
Accessories: cover and small rubber piece (b)
Object number: 1997-1-1799a
F. Sauerwald
Date: circa 1870
Object number: 1997-1-1799b
