Rotating 8-Sided Mirror
date: label: date made
content: From 1924-1926
label: date made
content: From 1924-1926 [Copied from duplicate deleted XG record ME.319992, mirror apparatus, michelson]
notes: label: Description
content: Albert Michelson (1852-1931), the first American to win a Nobel Prize in science, was keenly interested in the speed of light. In the years 1924-1926, he measured this constant by determining the time it took for a light beam to travel from Mount Wilson to Mount San Antonio, 22 miles distant, and return. Elmer Ambrose Sperry (1860-1930), owner of the Sperry Gyroscope Company, supplied the high intensity light and rotating eight-sided metallic mirror used in this experiment. The mirror in our collection is made for that purpose. It was cut from one piece of nickel steel.
label: Description
content: Ref: A. A. Michelson, “Measurement of the Velocity of Light Between Mount Wilson and Mount San Antonio,” <i>The Astrophysical Journal</i> 65 (1927): 1-13.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Preston R. Bassett
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.319992
label: catalog number
content: 319992
label: accession number
content: 241017
objectType: label: Object Name
content: Mirror Apparatus, Michelson
label: Object Name
content: Eight Sided Mirror
label: Object Name
content: eight sided mirror