Biographical Memoir of Asaph Hall, 1829-1907Judd & Detweiler, Incorporated, printers, 1908 - 69 pages |
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Biographical Memoir of Asaph Hall, 1829-1907 (Classic Reprint) George William Hill No preview available - 2015 |
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61 Cygni Acad Amer Analyst Appendix Asaph Hall asteroids Astr Astron astronomical August Bull Cambridge Coll companion of Sirius disk distance double stars E. S. Holden Elements of Comet ephemeris Equatorial observations Ferguson and Asaph Frisby Gentleman's Diary Goshen Hall and E. S. Hall observed Comet Hall's Hyperion Iapetus ington J. R. Eastman James Ferguson John Hall Journ Lady's and Gentleman's London Mathematical Question memoir Messenger of Math Michels Misc Moines Month moon Nachr Newcomb Note Observations of asteroids Observations of comets Observations of Hyperion observed the satellites orbit perturbations Phil photographs planet Pleiades position Problem Proc Professor Hall observed refractor Results of observations Right ascensions satellite of Neptune satellites of Mars satellites of Saturn Science Sidereal Messenger Smithson solar eclipse solar parallax tions Titan Titania Title transit circle transit of Venus U. S. Naval Observatory Uranus Wallingford Washington Obs'ns Washington Observations
Popular passages
Page 296 - A lamina is bounded on two sides by two similar ellipses, the ratio of the axes in each being m, and on the other two sides by two similar hyperbolas, the ratio of the axes in each being n. These four curves have their principal diameters along the coordinate axes. Prove that the product of inertia about the coordinate axes is (aa_ a' 2) (ft"—/?") where aa', ftft' are the semi-major axes of the curves.
Page 275 - Pulkova they had long observed a "subjectivity" as a companion of Procyon. He determined, if possible, to escape such mistakes. For mental relaxation Mr. Hall went to literature. He was fond of history, frequently read novels, and also poetry to a small extent. In science he did not venture outside of mathematics, astronomy, and physics. Mr. Hall was generous to a fault. But what a world of gratitude we owe him for his heroic, herculean perseverance! I do not suppose that he ever suffered from hunger,...
Page 266 - ... end of the eye-piece, near the micrometer wires. It might be better to silver one-half the forward lens of the eye-piece, but an attempt to do this did not give a good result. In making the observations, the planet was placed behind the colored glass, through which the wire could be seen, and, both objects being kept near the center of the field, the angle of position and the distance were measured by bisecting the disk of the planet and the satellite. In this way the observations were made in...
Page 285 - Newcomb, AN Skinner, and HP Tuttle.] Washington Obs'ns, 1871, pp. 103-116. 118. Zones of stars observed . . . with the meridian circle in the years 1847, 1848, and 1849. By James Major, Lafayette Maynard, William B. Muse. [Edited and introduction written byAsaph Hall.] (Washington Observations for 1871, Appendix I.) Washington, 1873. 9 + 162 pp. 30 cm. 1874. 119. Comets and meteors. Analyst, DesMoines, 1, 1874, pp. 17-24. 120. The chief justice of a court makes a large number of decisions. Afterward...
Page 250 - McGrawvillc and came home. He was now engaged to Miss Stickney, and it was proposed that, after marriage, they should together undertake a school wherever an opening might be found. Miss Stickney had gone to Wisconsin to visit some relatives and in the hope that some school might be found in that State suitable to the wishes of herself and her affiance. Mr. Hall joined her in February, 1856, and he also engaged in the quest for a school. These efforts were unsuccessful. Mr. Hall, who was a great...
Page 256 - I am going out to Fort Lincoln ; don't know how long I shall stay ; am to be under Admiral Goldsborough. We all go. Keep cool." Together with the other officials at the Observatory, Professor Hall was put in command of a number of workmen from the Navy Yard who manned an intrenchment near Fort Lincoln. Many of them were foreigners, and some of them did not know how to load a gun. However, the Observatory and Navy Yard people did...
Page 281 - ... (Mathematical Question 2089, answered.) Lady's and Gentleman's Diary, London, 166, 1869, p. 84. 63. Transformations of coordinates in Hansen' s method of perturbations. Messenger of Math., 5, 1871, pp. 15-23. 64. Report on observations of the total eclipse of the sun, August 7, 1869. [At station near Plover Bay, Siberia.] Washington Obs'ns, 1867, Appendix II, pp.
Page 285 - If a, 6, c, d, e,f, g, h, i,j, k be chords drawn from any point on the circumference of a circle to the eleven angles of an inscribed regular polygon of eleven sides, prove that (a + k) (b + j) (c + i) (d + h) (e + g) =/• (1).
Page 291 - ... x." (Problem 256, solved. ) Analyst, Des Moines, 6, 1879, p. 93. 193. Find the moments of inertia of an elliptic disk about a straight line in the plane of the disk and parallel to (1) the axis of x, (2) the axis of y, the equation of the disk being ax* + 2 bxy + cj/2 -f 2 dx -\- 2 ey + / = 0.
Page 283 - Encke's cornets, asteroids (26), (38), (43), (45), (54), (59), (60), (64), (76), (80), (92), (95), (98), (101), (102), (106), occultations of stars by the moon.] Washington Obs'ns, 1868, pp. 319-327. 87. Report on observations of the total solar eclipse of December 22, 1870. [Station at Syracuse, Sicily.] Washington Obs'ns, 1869, Appendix I, pp. 25-42. Quoted as to meteorological changes during totality and the appearance of the corona, in Astron. Soc. Mem., 41, 1879, pp. 213, 615, 643-644. 88. On...