Interferometer

Interferometer

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Description
Designed by the American physicist, Albert A. Michelson, this type of interferometer measures the speed of light along two different paths. Using an instrument of this sort in 1887, Michelson and Edward Morley showed that the speed of light is not affected by the motion of the earth through the supposed luminiferous ether. This unmarked example came from the University of Illinois.
Ref: Clarence H. Swick, Modern Methods for Measuring the Intensity of Gravity (Washington, D.C., 1921), fig. 16.
Location
Currently not on view
Object Name
Interferometer
Measurements
overall: 26.6 cm x 37.5 cm x 26.7 cm; 10 15/32 in x 14 3/4 in x 10 1/2 in
overall: 10 3/8 in x 8 1/8 in x 13 1/2 in; 26.3525 cm x 20.6375 cm x 34.29 cm
ID Number
PH.334757
accession number
312091
catalog number
334757
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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