Rudimentary Astronomy

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Crosby Lockwood, 1882 - 223 Seiten
 

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Statement of preliminary knowledge which is requisite for the student
14
Reference to other works
15
Precautions used in measuring a base
21
Mode of measuring horizontal angles
22
Method of triangulating a district
23
Method of measuring azimuths
24
Definition of curvature
25
Circle of curvature
26
Principles of construction of thezanith sector
27
CHAPTER I
28
Expeditions for the measure of an arc of the meridian
29
Reference for full description of the Greenwich instruments
30
Shape of the earth
31
Ratio of the earths polar and equatorial diameters
32
Aberration of light the remaining cause of apparent displace
36
Definition of horizontal equatorial parallax
40
Ellipse apparently described by a star round its mean place
50
Nutationellipse
56
Value of the constant of aberration
62
Signs of the zodiac
66
Formulas for calculation of true anomaly
75
8
80
9
83
Force of gravity at the surface of the sun
86
Results of the observations of the solar eclipse of 1851
88
On the zodiacal light
91
Effects of solar heat and light
92
CHAPTER V
93
Regression of the node of t e lunar orbit
94
Excentricity of the orbit
95
Approximate values of the longitude of the node and of its time of revolution of the inclination of the orbit and of the time of a revolution of the pe...
96
13
97
1S4 Perturbations of the lunar orbit
98
General remarks on the action of the suns disturbing force
99
On the effects of the radial and tangential disturbing force on the circular orbit
100
Explanation of the evection variation and annual equation
101
Expression for the moons true longitude
103
Investigation of the lunar phase for different positions with regard to the sun
104
Mothod of determining approximately the ratio of the distances of the sun and moon from the earth
106
197 The science of selenography
107
On the lunar atmosphere
108
On the eclipses of the sun and moon
109
On eclipses of the moon
111
CHAPTER VI
112
Disturbances produced by Venus in the solar and lunar orbits
125
On tho ultrazodiacal or small planets between Mars and Jupiter
126
Zodiacal starmaps of Bremiker and Bishop
127
Cloudbelts of Jupiter 12S 232 On the satellites of Jupiter
129
On the planet Satcbn
130
Discovery of the interior ring of Saturn
131
240243 The satellites of Saturn
132
Ellipticity of Saturn
133
On the planet TJeancs
134
The mass of Uranus
135
On the discovery of the planet Neptune
136
Ancient observations of Neptune by Lalande
138
Discovery of a satellite of Neptune and suspicion of a ring
139
Exceedingly small density of comets HO 258 Remarks on the physical nature of comets
141
On periodical comets
142
On Enckes comet and Bielas comet 1434
144
Comets and meteors
145
CHAPTEK II
146
Vagueness of the determinations of starmagnitudes 116
147
On catalogues of stars
148
Starcatalogue of Ptolemy
149
Starcatalogue of Hevelius
150
On temporary and variable stars
152
On double stars and multiple stars
153
On the double star a Centauri
154
On the proper motion of the sun
155
Madlers speculations on the central body of the universe
156
On the nebula
168
On starclusters
169
ON ASTRONOMICAL INSTRUMENTS
173
Recapitulation of ordinary phenomena 6
6
Invariable measure of length 7
7
3436 Definitions of right ascension and polar distance 14
14
Chief object of astronomical observations 15
15
Precautions used to insure uniformity of heating and cooling of a brass rod 8
8
Description of the transit instrument and its errors of ad justment 16
16
Means of measuring the error of collimation 17
17
Numerical correction for error of collimation 18
18
Numerical correction for error of level 19
19
Method of measuring the error of azimuth by means of two consecutive observations of the polar star 20
20
Method to be employed when two consecutive observations cannot be obtained 21
21
Method of obtaining by the transit instrument the error and rate of the clock 22
22
Northpolar distance the other coordinate necessary for de termining the place of a body 23
23
Method of eliminating the effect of excentricity of the circle 26
26

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