Wave Demonstration Device
name: label: maker
content: Max Kohl
notes: label: Description
content: This is probably a “Wave Machine after Fessel and Plucker . . . with two adjustable wave troughs and two sets of pins with balls on the ends for demonstrating transverse, Circular and elliptic wave motion.” It came from the Case Institute of Technology. The “MAX KOHL, A.G. / Fabrik physicalischer Apparate / CHEMNITZ i. Sa.” brass tag on the wooden box suggests that it was made after 1908.
label: Description
content: Friedrich Fessel (1821-ca. 1860), a craftsman in Cologne, devised a version of Wheatstone’s wave demonstration device. Julius Plucker (1801-1868), a mathematician and physicist in Bonn, published an account of Fessel’s instrument in 1849.
label: Description
content: Ref: Julius Plucker, in <i>Poggendorff Annalen</i> 78 (1849): 421.
label: Description
content: Max Kohl A.G, <i>Education and Laboratory Furniture for Physics, Chemistry and Biology Class Rooms and Laboratories</i> (Chemnitz, [1928]), p. 351.
label: Location
content: Currently not on view
place: label: place made
content: Germany: Saxony, Chemnitz
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.326478
label: catalog number
content: 326478
label: accession number
content: 251332
objectType: label: Object Name
content: wave demonstrator
physicalDescription: label: Measurements
content: overall: 13 in x 29 3/4 in x 11 1/8 in; 33.02 cm x 75.565 cm x 28.2575 cm