On the Connection of the Physical SciencesHarper & Brothers, 1846 - 460 pages |
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Page 13
... revolving in an ellipse , and making small and transient deviations , now on one side of its path , and now on the other , while the ellipse itself is slowly , but perpetually , changing both in form and position . The periodic ...
... revolving in an ellipse , and making small and transient deviations , now on one side of its path , and now on the other , while the ellipse itself is slowly , but perpetually , changing both in form and position . The periodic ...
Page 16
... revolving about the sun in the same plane ( N. 67 ) . This motion of the major axis , which is direct in all the orbits except that of the planet Venus , is irregular , and so slow , that it requires more than 109,830 years for the ...
... revolving about the sun in the same plane ( N. 67 ) . This motion of the major axis , which is direct in all the orbits except that of the planet Venus , is irregular , and so slow , that it requires more than 109,830 years for the ...
Page 19
... dimensions of all the orbits , and the periodic times of all the planets , to a certain degree . For example , the masses of all the planets revolving within the orbit of any one , such SECT . III . MEAN MOTION AND MAJOR AXIS . 19.
... dimensions of all the orbits , and the periodic times of all the planets , to a certain degree . For example , the masses of all the planets revolving within the orbit of any one , such SECT . III . MEAN MOTION AND MAJOR AXIS . 19.
Page 20
Mary Somerville. planets revolving within the orbit of any one , such as Mars , by adding to the interior mass , increase the at- tracting force of the sun , which , therefore , must con- tract the dimensions of the orbit of that planet ...
Mary Somerville. planets revolving within the orbit of any one , such as Mars , by adding to the interior mass , increase the at- tracting force of the sun , which , therefore , must con- tract the dimensions of the orbit of that planet ...
Page 21
... revolving about the sun in that direction for un- known ages . This rotation , which seems to be highly probable , may even have been coeval with its creation . Such a vortex would have no effect on bodies moving with it , but it would ...
... revolving about the sun in that direction for un- known ages . This rotation , which seems to be highly probable , may even have been coeval with its creation . Such a vortex would have no effect on bodies moving with it , but it would ...
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Common terms and phrases
61 Cygni action appears atmosphere attraction bodies caloric cause centrifugal force changes chemical color comet consequently crystal degree density diameter diminishes direction distance disturbing earth ecliptic effect electric currents electricity equal equator ether extremely fluid force galvanometer glass globe gravitation greater heat increase intensity Jupiter latitude length less light liquid longitude luminous lunar magnetic major axis mass mean meridian metal miles moon motion move nearly nodal lines nodes NOTE nutation observations optic axis orbit oscillations parallax particles passing perigee perihelion period phenomena planet plate polarized poles position produce quantity rays reflected refraction refrangible retrograde motion revolution revolving right angles rings rotation satellites secular Sir John Herschel Sir William Herschel solar spectrum sound space square stars substances sun's surface temperature terrestrial tion tourmaline transmitted tricity undulations Uranus variation varies velocity vibrations Voltaic waves wire
Popular passages
Page 457 - It is not only remarkably well written, but has a completeness about it we have never found before in any life of Mozart.— Louisville Journal. There is such a charm in this narrative, that the lovers of good biography can not hear of it too soon. We can not conceive a more fascinating story of genius. To a style which would alone have sufficed to the production of an interesting and striking narrative, Mr. Holmes unites a depth 01 knowledge and musical appreciation very rare and remarkable.
Page 29 - ... that the mean longitude of the first satellite, minus three times that of the second, plus twice that of the third, is always equal to two right angles.
Page 22 - That day, as other solemn days, they spent In song and dance about the sacred hill ; Mystical dance, which yonder starry sphere Of planets, and of fix'd, in all her wheels Resembles nearest, mazes intricate, Eccentric, intervolved, yet regular Then most, when most irregular they seem ; And in their motions harmony divine So smooths her charming tones, that God's own ear Listens delighted.
Page 364 - Post 8vo. Price 9s. cloth. Results of Astronomical Observations Made at the Cape of Good Hope. By Sir John Herschel. 4to, with Plates. Price 4/.
Page 359 - Jupiter ; it then gradually diminished in splendor, and having exhibited all the variety of tints that indicate the changes of combustion, vanished sixteen months after its discovery, without altering its position. It is impossible to imagine any thing more tremendous than a conflagration that could be visible at such a distance.
Page 376 - ... computed, that if a stone were projected from the moon in a vertical line, with an initial velocity of 10,992 feet in a second, — [more than four times the velocity of a ball when first discharged from a cannon, — instead of falling back to the moon by the attraction of gravity, it would come within the sphere of the earth's attraction, and revolve about it like a satellite. These bodies, impelled either by the direction of the primitive impulse, or by the disturbing action of the sun, might...
Page 292 - The spark taken in the same manner from zinc, cadmium, tin, bismuth, and lead, in the melted state, gives similar results ; but the number, position, and colours of the lines vary in each case. The appearances are so different that, by this mode of examination, the metals may be readily distinguished from each other.
Page 291 - The spectrum of the electro-magnetic spark taken from mercury consists of seven definite rays only, separated by dark intervals from each other ; these visible rays' are two orange lines close together, a bright green line, two bluish green lines near each other, a very bright purple line, and, lastly, a violet line.
Page 231 - John thence concludes — 1st. That it is the heat of these rays, not their light, which operates the change ; 2ndly. That this heat possesses a peculiar chemical quality which is not possessed by the purely calorific rays outside of the visible spectrum, though far more intense ; and, 3rdly. That the heat radiated from obscurely hot iron, abounds especially in rays analogous to those of the region of the spectrum above indicated.
Page 2 - Equally conspicuous is the goodness of the great First Cause, in having endowed man with faculties by which he can not only appreciate the magnificence of His works, but trace, with precision, the operation of his laws ; use the globe he inhabits as a base wherewith to measure the magnitude and distance of the sun and planets, and make the diameter of the earth's orbit the first step of a scale by which he may ascend to the starry firmament.