electromagnetic writing tuning fork
Datecirca 1895
Inventory NumberWJ0121
ClassificationTuning Fork
Subject
Maker
E. Zimmermann
founded 1887
Cultural Region
Place of Origin
Dimensions46 × 26.7 × 30.5 cm (18 1/8 × 10 1/2 × 12 in.)
Material
DescriptionHeavy tripod and rod stand support an electromagnetic tuning fork, which vibrates at 250 VS. A metallic pen on one of the tines is broken. The tuning fork can be raised or lowered on the rod. It was used for graphic recording of data, most likely on a kymograph.
Signedon brass section of fork: E. ZIMMERMANN / LEIPZIG.
ProvenancePsychology Department, William James Hall, Harvard University.
American
Date: 1920-1950
Object number: 1997-1-1050
Louis Jules Duboscq
Date: circa 1870
Object number: 1997-1-0929
Rudolph Koenig
Date: circa 1890
Object number: WJ0042
Rudolph Koenig
Date: circa 1889
Object number: 1997-1-0884
Louis Jules Duboscq
Date: circa 1870
Object number: 1997-1-0930
The W. M. Welch Scientific Company
Date: 1950-1960
Object number: 1998-1-0450
