Oil Drop Apparatus

Oil Drop Apparatus

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Usage conditions apply
Robert A. Millikan and Harvey Fletcher used an oil drop to measure the elementary electric charge (the charge of the electron) in 1909. This instrument is designed for repeating that experiment. One inscription reads “W. G. Pye & Co., Cambridge, Eng.” The “Pale Company, New York” tag on the base identifies the firm that sold it in the United States.
The Pale Company sold apparatus for industrial and laboratory use, and was in business by 1918.
Currently not on view
Object Name
Oil Drop Apparatus
W. G. Pye & Company
place made
United Kingdom: England, Cambridge
Associated Place
United States: New Jersey
microscope tube: 15.2 cm x 2.2 cm; 6 in x 7/8 in
overall: 15.2 cm x 16.5 cm x 20.3 cm; 6 in x 6 1/2 in x 8 in
overall: 6 in x 7 7/8 in x 6 7/16 in; 15.24 cm x 20.0025 cm x 16.35125 cm
ID Number
catalog number
accession number
Credit Line
Gift of Rutgers University Department of Physics
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History
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