Mathematical Tracts on the Lunar and Planetary Theories, the Figure of the Earth, Precession and Nutation, the Calculus of Variations, and the Undulatory Theory of Optics: Designed for the Use of Students in the University |
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... former of these subjects , it is hoped , will ( independently of its vast importance ) be acceptable to the class of students for whom it is intended , for the general beauty of its results and the comparative facility of its ...
... former of these subjects , it is hoped , will ( independently of its vast importance ) be acceptable to the class of students for whom it is intended , for the general beauty of its results and the comparative facility of its ...
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... former qualification I shall merely state that I have re- peated nearly every experiment alluded to in the following Tract . This character of certainty I conceive to belong only to what may be called the geometrical part of the theory ...
... former qualification I shall merely state that I have re- peated nearly every experiment alluded to in the following Tract . This character of certainty I conceive to belong only to what may be called the geometrical part of the theory ...
Page 16
... former = − m ' . Gm ' y's · cos m'GB . Let be the longitude of M , seen from G ; of m ' : then m'GB = 0-0 ' : and the part of ' the longitude m ' . Gm ' 13 y'3 parallel to BG m ' . Gm ' y's cos 0-0 ' . Hence , the whole force on M in ...
... former = − m ' . Gm ' y's · cos m'GB . Let be the longitude of M , seen from G ; of m ' : then m'GB = 0-0 ' : and the part of ' the longitude m ' . Gm ' 13 y'3 parallel to BG m ' . Gm ' y's cos 0-0 ' . Hence , the whole force on M in ...
Page 51
... former of these depends upon the Moon's distance from the mean place of her node , and is nearly the difference be- tween her longitude , measured on her orbit , and her longitude , measured on the ecliptic : it is called the reduction ...
... former of these depends upon the Moon's distance from the mean place of her node , and is nearly the difference be- tween her longitude , measured on her orbit , and her longitude , measured on the ecliptic : it is called the reduction ...
Page 62
... former case , 4 • thirteen or more are necessary in the latter . Here then the planetary theory is much more complicated than the lunar theory . In following for this investigation a process somewhat differ- ent from that of the former ...
... former case , 4 • thirteen or more are necessary in the latter . Here then the planetary theory is much more complicated than the lunar theory . In following for this investigation a process somewhat differ- ent from that of the former ...
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Mathematical Tracts on the Lunar and Planetary Theories, the Figure of the ... George Biddell Airy No preview available - 2018 |
Mathematical Tracts on the Lunar and Planetary Theories, the Figure of the ... George Biddell Airy No preview available - 2015 |
Mathematical Tracts on the Lunar and Planetary Theories, the Figure of the ... George Biddell Airy No preview available - 2018 |
Common terms and phrases
analyzing plate angle angle of incidence angular velocity attraction axes axis bright co-ordinates coefficient common light Consequently cos² crystal curve density different colours differential direction displacement distance disturbing force dR dR dt dt dx dx Earth ellipticity equal equation expression extraordinary ray Fresnel's rhomb front function ƒ² glass Hence integration intensity investigation length longitude lunar Moon Moon's motion multiplied nearly Newton's rings nutation orbit ordinary ray parallel particles perigee perihelion perpendicular plane of incidence plane of polarization plane of reflection precession principal plane produced PROP proportion quantity refraction rhombohedron rings shews sin² spheroid suppose surface true anomaly undulation vibration vt-x wave
Popular passages
Page 12 - The centre of gravity of the Earth and Moon describes about the Sun, very nearly, an ellipse in one plane, and the area passed over by its radius vector is very nearly proportional to the time.
Page 285 - We have every reason to think that a part of the velocity of sound depends on the circumstance that the law of elasticity of the air is altered by the instantaneous developement of latent heat on compression, or the contrary effect on expansion. Now if this heat required time for its developement, the quantity of heat developed would depend on the time during which the particles remained in nearly the same relative state; that is, on the time of vibration. Consequently...
Page 286 - Now, if this heat required time for its development, the quantity of heat developed would depend upon the time during which the particles remained in nearly the same relative state, that is, on the time of vibration. Consequently, the law of elasticity would be different for different times of vibration, or for different lengths of waves ; and therefore the velocity of transmission would be different for waves of different lengths. If we suppose some cause which is put in action by the vibration...
Page 339 - On considering this presumption in conjunction with the second and third conclusions, we easily arrive at this simple hypothesis explaining the whole : Common light consists of undulations in which the vibrations of each particle are in the plane perpendicular to the direction of the wave's motion. The polarization of light is the resolution of the vibrations of each particle into two, one parallel to a given plane passing through the direction of the...
Page 343 - ... that there are three directions^" at right angles to each other, in which if a particle be disturbed, the resultant of the forces * M.
Page 343 - To explain the separation of common light into two pencils by doubly refracting crystals : and to account for the polarization of the two rays in planes at. right angles to each other.
Page 255 - I* when a single undulation' only is considered. It is to be observed that a is the maximum vibration of any particle. PROP. 5. To explain the interference of undulations. 9. By interference is meant the co-existence of two undulations in which the length of a wave is the same. The conception of interference is not in any circumstances...
Page 284 - ... and this will cause a reflected wave. Thus when light passes through glass there will be reflection at both surfaces. But there is this difference between th'e two reflections : one is caused by a vibration in the same direction as that of the incident ray, and the other by a vibration in the direction opposite to that of the incident ray. We shall find this distinction important in explaining a fundamental experiment (65). The same thing may be thus shewn. If we suppose a mass of glass to be...