Harvard-type inductorium
Date1900-1930
Inventory NumberWJ0140
ClassificationInductorium
Subject
Manufacturer
Harvard Apparatus Company
1901-present
Cultural Region
Place of Origin
Dimensions9 × 24.7 × 8.8 cm (3 9/16 × 9 3/4 × 3 7/16 in.)
Material
DescriptionElectric current is applied to a sliding magnetized coil through one end of the support. The coil can move on parallel rods graduated in centimeters (0-2-4-...-12) and can be tilted from 0 to 90°. It can also slide over the immobile core consisting of copper wires. The amount of electricity induced in the core is gathered via the binding posts attached to the wood support.
Signedunsigned
Curatorial RemarksThis model of the du Bois-Reymond-type inductorium was better known as a Harvard inductorium. For a representation, see Dennis E. Jackson, <i>Experimental Pharmacology</i> (Saint Louis: C.V. Mosby Company, 1917), 35. [Online at Google Books <a href="http://books.google.com/books?id=0prvUPiLCyMC&pg=PA13&lpg=PA13&dq=%22dubois+reymond%22+inductorium&source=web&ots=1yGEd1fZTW&sig=XuLlr3JzZ6jxpklBZ4UUIXBarrI&hl=en#PPA35,M1" target="_blank">here</a>.]
FunctionInstrument used to vary the inductance of a system, or the ratio of the magnetic flux to the electric current.
ProvenanceFrom the Department of Psychology, William James Hall, Harvard University.
Keuffel & Esser Company
Date: 1916-1926
Accessories: wood case and key; photocopy of original Keuffel & Esser Co. catalogue in which the model is introduced
Object number: 1996-1-0084
L. E. Knott Apparatus Company
Date: circa 1910
Object number: 0451
Société Genevoise pour la Construction d'Instruments de Physique et de Mécanique
Date: 1880-1890
Accessories: Check see also records: box of weights and other parts (#1998-1-0248c); extra mount for finderscope (#1998-1-0248b).
Object number: 1998-1-0248a
Charles Thurber
Date: circa 1860
Accessories: wooden framed, glass paned case; original and photocopied letter from the Massachusetts Historical Society Director, Stephen T. Riley to David P. Wheatland dated June 28, 1961regarding permanent loan of the pantograph (in instrument file); original and photocopied hand-written letter from David P. Wheatland to Stephen T. Riley regarding permanent loan of the pantorgraph dated March 16, 1962 (in instrument file); original and photocopied hand written letter from David P. Wheatland to Stephen T. Riley regarding the pantograph dated June 23 1961 (in instrument file)
Object number: 1998-1-1617
