Book/Printed Material Manual of astronomy; a text-book
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Image 1 of Manual of astronomy; a text-book- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 2 of Manual of astronomy; a text-book s S o^ I c c^ r S 0^ 1 ._-«fe^^ ^^0^ -k^ .N^ .V V ,^HO^ o 0^ 95 *^n L .-9 O. *y X^ o_ y- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 3 of Manual of astronomy; a text-book oo f, 4 S V^ ^0^ .0^ V q o ^^d 95 X c^^ v^^\r-.-% cS ^o, I .V x^ N ^^0^ N^ J b V 0^ s^ ^x, rf ^^0^ ^.o…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 4 of Manual of astronomy; a text-book- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 5 of Manual of astronomy; a text-book- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 6 of Manual of astronomy; a text-book Great Double Telescope, Visual aud. Photographic, of the Potsdam Astrophysical Observatory. (See Sec, 51.)- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 7 of Manual of astronomy; a text-book MANUAL OF ASTRONOMY A TEXT-BOOK BY CHARLES A. YOUNG, Ph.D., LL.D. Professor of Astronomy in Princeton University, Author of The Sun and of a Series of Astronomical, Text-Books 4 I I 9…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 8 of Manual of astronomy; a text-book THE LIBRARY OF CONGRESS, Two Copies Received JUN. 3 1902 ^OPVRIGHT ENTRY CLASS G^XXa No.j COPY B. Entered at Stationers Hall Copyright, 1902 By CHAELES A. YOUNG ALL RIGHTS RESERVED e 9…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 9 of Manual of astronomy; a text-book (^f3 PEE FACE The present volume has been prepared in response to a rather pressing demand for a text-book intermediate between the author s Elemeiits of Astronomy and his Greyieral Astroyiomy. The…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 10 of Manual of astronomy; a text-book iv PREFACE Observatory, and Professors Hale, Frost, and Barnard of the Yerkes, besides several others to whom acknowledgment is made in the text. The volume speaks for itself as to the skillful…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 11 of Manual of astronomy; a text-book TABLE OF CONTENTS PAGES INTROUUCTION 1-5 CHAPTER I. Preliminary Considerations and Defini- tions Fundamental Notions and Definitions Astronom- ical Coordinates and the Doctrine of the Sphere The Celestial Globe Exercises 6-31 CIIAPTP]R…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 12 of Manual of astronomy; a text-book vi TABLE OF CONTENTS PAGES CHAPTER VIII. The Sun Its Distance, Dimensions, Mass, and Density Its Eotation and Equatorial Accel- eration Methods of studying its Surface The Photo- sphere Sun-Spots Their ]^ature.…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 13 of Manual of astronomy; a text-book TABLE GF CONTENTS yii PAGES CHAPTER XV. Methods of detp:kmining the rAUAi.- LAx AND Distance of the Sun Importance and Diffi- culty of the Problem Historical Classification of Methods Geometrical Methods Oppositions…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 14 of Manual of astronomy; a text-book- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 15 of Manual of astronomy; a text-book MANUAL OF ASTEONOMY INTRODUCTION 1. Astronomy is the science which treats of the heavenly bodies, as is indicated by the derivation of its name (aarpov vofjio^). It considers (1) Their motions, both…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 16 of Manual of astronomy; a text-book 2 MANUAL OF ASTKOXOMY Classifica- tion of the heavenly bodies. Branches of astronomy. 2. The Heavenly Bodies. The bodies thus seen from the earth are the heavenly bodies. For the most part…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 17 of Manual of astronomy; a text-book INTRODUCTION 3 only with angles and directions, and, strictly regarded, is merely spherical trigonometry applied to astronomy. (3) Practical Astronomy. This treats of the instruments, the methods of observation, and the processes…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 18 of Manual of astronomy; a text-book MANUAL OF ASTRONOMY Astronomy still pro- gressive. Use in navi- gation and geodesy. Use in regu- lation of time. Chief value purely intel- lectual. compelled the attention of even the most unobservant.…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 19 of Manual of astronomy; a text-book INTRODUCTION 5 of simple law Avorking out the most far-reaching results, in the delight over the beauty and order revealed by the telescope and spectroscope in systems otherwise invisible, in the recogni-…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 20 of Manual of astronomy; a text-book CHAPTER I PRELIMINARY CONSIDERATIONS AND DEFINITIONS Fundamental Notions and Definitions Astronomical Coordinates and the Doctrine of the Sphere The Celestial Globe Astronomy, like all the other sciences, has a terminology of its…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 21 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIONS AND DEFINITIONS D C indefinitely, to pierce it at a single point, the vanishing point of perspective, or the point at infinity of projective geometry. However far apart the lines…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 22 of Manual of astronomy; a text-book 8 MAN^UAL OF ASTRONOMY Angular units used in express- ing measure- ments on celestial sphere. The radian, therefore, equals 57°. 29 {i.e., 360° 2 tt), or 3437 .75 {i.e., 21600 2 tt),…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 23 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIONS AND DEFINITIONS 9 If, as is usual in astronomy, the diameter of an object is small as compared with its distance, so that sin s practically A -Ts B Fig.…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 24 of Manual of astronomy; a text-book 10 MANUAL OF ASTRONOMY POINTS AND CIRCLES OF REFERENCE AND SYSTEMS OF COORDINATES In order to be able to describe intelligently the position of a heavenly body in the sky, it is…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 25 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIONS AND DEEINITIONS 11 The Nadir is the point opposite to the zenith, directly under foot in the invisible part of the celestial sphere. Both zenith and nadir are derived from…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 26 of Manual of astronomy; a text-book 12 MANUAL OF ASTRONOMY Vertical circles and. the meridian. Altitude and zenith- distance defined. 14. Vertical Circles the Meridian and the Prime Vertical. Vertical circles are great circles drawn from the zenith…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 27 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIONS AND DEFINITIONS 13 vertical circle ZMH passes through the body 31. The arc MH is the altitude of Jf, and the arc ZM (the complement of MH) is its zenith-distance.…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 28 of Manual of astronomy; a text-book 14 MANUAL OF ASTRONOMY B. SYSTEM DEPENDING UPON THE DIRECTION OF THE EARTH S AXIS OF ROTATION Apparent 18. The Apparent Diurnal Rotation of the Heavens. If on the heavens. clear evening…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 29 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIONS AND DEFINITIONS 15 easternmost stars of the four which form its bowl are called the pointers^ because they point to the pole-star^ a solitary star The poie- not quite half-way…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 30 of Manual of astronomy; a text-book X6 MA]SrUAL OF ASTRONOMY Polar star trails. Diurnal circles. Definition of the poles of rotation. Mechanical definition of the pole. up towards the pole-star and remains firmly fixed while the stars, by…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 31 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIONS AND DEFINITIONS 17 20. The Celestial Equator, or Equinoctial, and Hour-Circles. The Celestial Equator is the great circle of the celestial sphere^ drawn half-way between the poles (therefore everywhere 90°…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 32 of Manual of astronomy; a text-book 18 MANUAL OF ASTRONOMY Relation of units of time to units of angle. This angle, or arc, may of course be measured like any other, in degrees, but since it depends upon…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 33 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIONS AND DEFINITIONS 19 the hour angle changes continually and uniformly at the rate of The hour 15° for every sidereal hour. This unfits it for use in ephemeri- changes des…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 34 of Manual of astronomy; a text-book 20 MANUAL OF ASTRONOMY Position of the vernal equinox. Definitions of right ascension. The sidereal day. Sidereal time. Definition of sidereal time. No conspicuous star marks the position of the vernal equinox;…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 35 of Manual of astronomy; a text-book PRELIMINARY CONSIDERATIOIS S AND DEFINITIONS 21 purposes, most conveniently defined as the sidereal time at the Observatory moment when the star is crossing the observer s meridian. Since _ right ascen- tlie…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 36 of Manual of astronomy; a text-book 22 MANUAL OF ASTRONOMY It is unfortunate, or at least confusing to beginners, that celes- tial latitude and longitude should not correspond with the ter- restrial quantities that bear the same name.…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 37 of Manual of astronomy; a text-book PRELTMINARY CONSIDERATIOXS AND DEFINITIONS 23 the eartli^ by means of which geographical positions are desig- nated. Of in the sky takes the place of Greenwich on the earth. Finally, the earth s…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 38 of Manual of astronomy; a text-book 24 MANUAL OF ASTRONOMY Z is the zenith P, the north pole (of rotation) P the pole of the ecliptic °f the vernal equinox, and dZh, the autumnal 8^ E, N, W…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 39 of Manual of astronomy; a text-book PKELIMTNARY CONSIDEKATIONS AND DEFINITIONS 25 31. The Astronomical Triangle. The triangle PZO (pole- zenith-object) (Fig. 8) is often called the astronomical triangle because so many problems, especially of nautical astronomy, depend on…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902
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Image 40 of Manual of astronomy; a text-book 26 MAN^UAL OF ASTRONOMY to their vanishing point in the celestial sphere (Sec. 7), which is the celestial pole. The angle H OP is therefore the altitude of the pole as seen…- Contributor: Young, Charles A. (Charles Augustus)
- Date: 1902