Bond, George Phillips, 1825-1865.

Sidereal and Mean Time Clocks, 1856-01-01/1856-04-21 Digital

FOUND IN: Wolbach Archives, Wolbach Library, Harvard University / Collection: Harvard College Observatory observations, logs, instrument readings, and calculations / Series: Early Work of the HCO under the Bond Adminstrations / File: G1-8, also Ga, Gb: Relating to Clocks and Chronometers

Item — Box 4Identifier: KG11365-6, phaedra0146

Scope and Contents: Comparisons by 12MT- Comparators -1107 and 1508; Comparison of chronometers with MTC - by aid of 6hr; Comparisons with comparator No. 1508; 1855 June 5th Last comparison before embarcation; Direct comparisons; Comparison of chronometer Thomas Adams No 3585;Comparator Y (No. 1107 -)(copied from the paper found in the top); Sidereal Chronometer No. 3585; Errors of Chronometers on Greenwich M.S.T.; Notes documenting return of specific chronometers following examination; Direct comparison of...

Sidereal and Mean Time Clocks, 1856-01-01/1857-02-27 Digital

FOUND IN: Wolbach Archives, Wolbach Library, Harvard University / Collection: Harvard College Observatory observations, logs, instrument readings, and calculations / Series: Early Work of the HCO under the Bond Adminstrations / File: G1-8, also Ga, Gb: Relating to Clocks and Chronometers

Item — Box 4Identifier: KG11365-6, phaedra0147

Scope and Contents:

Timings of chronometers and Mean Time clocks; notes on clock adjustments; Note of offer by Mr. Dodge to sell telegraph lines to the observatory

Sidereal and Mean Time Clocks, 1856-07-02/1857-02-27 Digital

FOUND IN: Wolbach Archives, Wolbach Library, Harvard University / Collection: Harvard College Observatory observations, logs, instrument readings, and calculations / Series: Early Work of the HCO under the Bond Adminstrations / 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.

Sidereal and Mean Time Clocks, 1858-07-02/1860-07-16 Digital

FOUND IN: Wolbach Archives, Wolbach Library, Harvard University / Collection: Harvard College Observatory observations, logs, instrument readings, and calculations / Series: Early Work of the HCO under the Bond Adminstrations / File: G1-8, also Ga, Gb: Relating to Clocks and Chronometers

Item — Box 4Identifier: KG11365-6, phaedra0149

Scope and Contents:

Data relating to timing output of various clocks and chronometers.

Sidereal and Mean Time Clocks, 1860-07-16/1862-09-03 Digital

FOUND IN: Wolbach Archives, Wolbach Library, Harvard University / Collection: Harvard College Observatory observations, logs, instrument readings, and calculations / Series: Early Work of the HCO under the Bond Adminstrations / File: G1-8, also Ga, Gb: Relating to Clocks and Chronometers

Item — Box 4Identifier: KG11365-6, phaedra0150

Scope and Contents:

1860 July 17/18: "These chronometers were used for observing the solar eclipse. See Transit Book of this date."; "Corrections of the New Clock. (Isody. Escap.) [i.e., Isodynamic Escapement] Oct. 23 1860 to Apr. 8 1861; Timing data recorded for various devices; Cambridge and Boston

Bond, George Phillips, 1825-1865.

Found in 5 Collections and/or Records:

Sidereal and Mean Time Clocks, 1856-01-01/1856-04-21 Digital

Sidereal and Mean Time Clocks, 1856-01-01/1857-02-27 Digital

Sidereal and Mean Time Clocks, 1856-07-02/1857-02-27 Digital

Sidereal and Mean Time Clocks, 1858-07-02/1860-07-16 Digital

Sidereal and Mean Time Clocks, 1860-07-16/1862-09-03 Digital

Filtered By