Determination of the Difference of Longitude Between Washington and Paris, 1913-1914, Vol. 9 (Classic Reprint) - Softcover
Synopsis
Directly determined longitudes across an ocean span using radio signals and careful astronomical work.
This reprint of a classic United States Naval Observatory publication presents the 1913–1914 Washington–Paris longitude determination, showing how scientists used radio time signals, transit instruments, and clock corrections to measure the difference in longitude between two major observatories.
The book details the full program—from preliminary tests to the definitive radio-era measurements. It explains the astronomical setup, the equipment used, and the methods for reducing observations to a precise longitude value. Readers will see how experimental design, timing, and data analysis come together in a landmark geodetic effort.
- How radio signals enabled a direct longitude comparison over a distance of about 3,800 miles.
- The roles of clocks, lags, and level corrections in achieving precision.
- How observations were planned, executed, and reduced to steady results across two periods.
- Context on prior methods and the historical significance of this transatlantic measurement.
Ideal for readers interested in the history of astronomy, geodesy, and early 20th‑century science, as well as those curious about how direct longitude determinations were achieved before modern satellite methods.
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Determination of the Difference of Longitude Between Washington and Paris,
Print on DemandSeller: Forgotten Books, London, United Kingdom
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Paperback. Condition: New. Print on Demand. This book measures and compares the longitude of Paris to that of Washington, D.C., using early 20th century radio techniques. In 1912, Captain J. L. Jayne submitted a proposal to the United States Naval Observatory to determine the longitude difference via radio transmission. After preliminary experiments in 1913, the author along with French observers conducted the first such experiment across the Atlantic Ocean, between Washington, D.C., and the Eiffel Tower in Paris, during the fall of 1913 and spring of 1914. This book includes the resulting findings. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9780331925708_0
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Determination of the Difference of Longitude Between Washington and Paris, 1913-1914, Vol. 9 (Classic Reprint)
Seller: PBShop.store US, Wood Dale, IL, U.S.A.
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9780331925708
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Determination of the Difference of Longitude Between Washington and Paris, 1913-1914, Vol. 9 (Classic Reprint)
Seller: PBShop.store UK, Fairford, GLOS, United Kingdom
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9780331925708
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