RECORDS: 1 - 25 of 27
Clock Corrections, 1869/1872 Digital
Item — Box 9Identifier: KG11365-6, phaedra0357Clock Corrections, 1872/1875 Digital
Item — Box 9Identifier: KG11365-6, phaedra0358Clock Corrections, 1875 Digital
Item — Box 9Identifier: KG11365-6, phaedra0359Clock Errors, 1878 Digital
Item — Box 75Identifier: KG11365-6, phaedra1790Clock Errors, General Catalog, Instrumental Constants, 1874/1875 Digital
Item — Box 70Identifier: KG11365-6, phaedra1680Clock Errors, General Catalog, Instrumental Constants, 1878/1879 Digital
Item — Box 70Identifier: KG11365-6, phaedra1681Clock Errors, General Catalog, Instrumental Constants, 1883 Digital
Item — Box 70Identifier: KG11365-6, phaedra1682Clock Errors, Instrumental Constants, 1871/1872 Digital
Item — Box 70Identifier: KG11365-6, phaedra1678Clock Errors, Polar Catalog, Instrumental Constants, 1872/1873 Digital
Item — Box 70Identifier: KG11365-6, phaedra1679Comparison of Waltham Clock with South clock, 1878 Digital
Item — Box 74Identifier: KG11365-6, phaedra1779Error of Sidereal Clock, 1908 Digital
Item — Box 74Identifier: KG11365-6, phaedra1780Error of Sidereal Clock, 1913 Digital
Item — Box 74Identifier: KG11365-6, phaedra1781Error of Sidereal Clock, 1911 Digital
Item — Box 74Identifier: KG11365-6, phaedra1782Error of Sidereal Clock, 1910
Item — Box 74Identifier: KG11365-6, phaedra1783Record of Errors of Clocks, 1866/1869 Digital
Item — Box 9Identifier: KG11365-6, phaedra0351Sidereal and Mean Time Clocks, 1856-01-01/1856-04-21 Digital
Item — Box 4Identifier: KG11365-6, phaedra0146Sidereal and Mean Time Clocks, 1856-01-01/1857-02-27 Digital
Item — Box 4Identifier: KG11365-6, phaedra0147Timings 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
Item — Box 4Identifier: KG11365-6, phaedra0148Questions 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
Item — Box 4Identifier: KG11365-6, phaedra0149Data relating to timing output of various clocks and chronometers.
Sidereal and Mean Time Clocks, 1860-07-16/1862-09-03 Digital
Item — Box 4Identifier: KG11365-6, phaedra01501860 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
Sidereal and Mean Time Clocks, 1862-09-16/1866-03-02 Digital
Item — Box 4Identifier: KG11365-6, phaedra0151Directions for Absolute Time; Brief Ephemeris for locally-viewed stars for May 1865; Eclipse of Sun - End West Wing Equatorial; Timing output data and status information relating to a number of chronometric devices
Time Service, Clock Comparison, 1881 Digital
Item — Box 75Identifier: KG11365-6, phaedra1799Time Service Clock Comparisons, 1879/1880 Digital
Item — Box 75Identifier: KG11365-6, phaedra1805Time Service Clock Comparisons, 1878/1879 Digital
Item — Box 75Identifier: KG11365-6, phaedra1806Time Service (Clock Errors), 1879 Digital
Item — Box 74Identifier: KG11365-6, phaedra1789Filtered By
REFINE MY RESULTS:
- Subject
- Time -- Systems and standards -- United States. 5
- Names
- Bond, George Phillips, 1825-1865. 5
- Harvard College Observatory 5
- Rogers, William A. (William Augustus), 1832-1898 5
- Hall, , Asaph, III, 1829-1907 4
- Waldo, Leonard, 1853- 4
- Waldo, Frank 3
- Bond, Richard Fifield, 1827-1866 2
- Bond, William Cranch, 1789-1859 2
- Coolidge, Philip Sidney, 1830-1863 2
- O'Reilly, Philip G. 2
- Upton, Winslow, 1853-1914 2
- Dunne, John A. 1
- Edmands, John Rayner, 1850-1910 1
- McConnel, Augustus 1
- McCormack, Joseph F. 1
- Safford, Truman Henry, 1836-1901 1
- Tuttle, Charles Wesley, 1829-1881 1 ∧ less