Harmonic Motion of Rotation Apparatus
date: label: date made
content: ca 1910
notes: label: Description
content: With a Harmonic Motion of Rotation Apparatus, students could verify the laws of harmonic motion. The “Gurley” inscription on one leg of this example refers to W. & L. E. Gurley, the Troy, N.Y. firm that specialized in surveying instruments, and that produced physical and scientific instruments for a few years in the early twentieth century. Gurley boasted that this instrument “is simple in design and compactly built. The horizontal aluminum circle is graduated in degrees. The vertical axis is supported on cone bearings. The inertia may be varied by shifting the weights on the horizontal arms. The laws of simple harmonic motion are verified by noting a number of successive readings of the pointer on the scale.” New, it cost $22.
label: Description
content: Ref: W. & L. E. Gurley, <i>Physical and Scientific Instruments</i> (Troy, 1910), pp. 108-109.
label: Description
content: Joseph S. Ames and William J. A. Bliss, <i>A Manual of Experiments in Physics</i> (New York, 1898), pp. 111-117.
label: Location
content: Currently not on view
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.315749
label: catalog number
content: 315749
label: accession number
content: 217544
objectType: label: Object Name
content: harmonic motion apparatus
physicalDescription: label: Measurements
content: overall: 17 in x 12 1/2 in x 12 in; 43.18 cm x 31.75 cm x 30.48 cm