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Subjects
Astronomical clocks, Clocks and watchesPlaces
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Sidereal clock and mean solar clock combined: system: Strkömgren and Olsen
1917, Cornelius Knudsen, Nautical Department
in English
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Book Details
Edition Notes
"The clock constructed by Professor Elis Strkömgren and Engineer Jens Olsen which shows sidereal time and mean time at the same instant, is of extreme value for anybody engaged in determining time and place, consequently for astronomers, geodesians, and seamen"--Introduction.
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- Created December 31, 2022
- 1 revision
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December 31, 2022 | Created by MARC Bot | Imported from Harvard University record |