Astronomical clocks -- United States.
Subject
Subject Source: Library of Congress Subject Headings
Found in 1 Collection or Record:
Sidereal and Mean Time Clocks, 1856-07-02/1857-02-27 Digital
FOUND IN:
Wolbach Archives, Wolbach Library, Harvard University
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Collection:
Harvard College Observatory observations, logs, instrument readings, and calculations
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Series:
Early Work of the HCO under the Bond Adminstrations
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File:
G1-8, also Ga, Gb: Relating to Clocks and Chronometers
Item — Box 4Identifier: KG11365-6, phaedra0148
Scope and Contents:
Questions propounded by Mr Briggs, relative to his clock with a circulating pendulum; Comparison of sidereal clock with that containing Briggs patent circulating pendulum; recorded chronometer timings; Lieut. Ives set up his transit instrument on the stand of our variation-transit and obtained the following y E.C. and the Spring-governor.; Result, time to be given 4 1/2 seconds sooner at Cambridge than the bells at Boston should strike.