On the Connexion of the Physical Sciences |
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Page 12
... opposite to one another , called the vernal and autumnal equinoxes . The ver- nal equinox is the point through which the sun passes , in going from the southern to the northern hemisphere ; and the autumnal , that in which he crosses ...
... opposite to one another , called the vernal and autumnal equinoxes . The ver- nal equinox is the point through which the sun passes , in going from the southern to the northern hemisphere ; and the autumnal , that in which he crosses ...
Page 13
... opposite to the other , through which the planet descends in going from the northern to the southern hemisphere . The longitude and latitude of a planet cannot be obtained by direct observation , but are de- duced from observations made ...
... opposite to the other , through which the planet descends in going from the northern to the southern hemisphere . The longitude and latitude of a planet cannot be obtained by direct observation , but are de- duced from observations made ...
Page 38
... opposite direction ; consequently , when the first is eclipsed , the other two must be be- tween the sun and Jupiter . The instant of the begin- ning or end of an eclipse of a satellite marks the same instant of absolute time to all the ...
... opposite direction ; consequently , when the first is eclipsed , the other two must be be- tween the sun and Jupiter . The instant of the begin- ning or end of an eclipse of a satellite marks the same instant of absolute time to all the ...
Page 50
... opposite to the sun , the axis of which passes through the centres of the sun and earth.2 The length of the shadow terminates at the point where the apparent diameters3 of the sun and earth would be the same . When the moon is in oppo ...
... opposite to the sun , the axis of which passes through the centres of the sun and earth.2 The length of the shadow terminates at the point where the apparent diameters3 of the sun and earth would be the same . When the moon is in oppo ...
Page 54
... form with it , are measured ; their sum subtracted from two right angles gives the Note 93 . 2 Note 113 . angle opposite the base ; therefore , by trigonometry , 54 SECT . V. OCCULTATIONS . parallax and distance of, 54 69.
... form with it , are measured ; their sum subtracted from two right angles gives the Note 93 . 2 Note 113 . angle opposite the base ; therefore , by trigonometry , 54 SECT . V. OCCULTATIONS . parallax and distance of, 54 69.
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Common terms and phrases
action appears atmosphere attraction bodies caloric cause celestial centre centrifugal force chemical colours comet consequently David Brewster decrease degrees density diameter diminishes direction earth ecliptic effect electric currents electricity equal equator equilibrium equinox excentricity extremely fluid galvanometer glass globe gravitation greater heat increase inequalities intensity Jupiter Jupiter's latitude length light liquid longitude lunar magnetic major axis mass mean distance mean motion meridian miles moon move nearly needle nodal lines nodes NOTE nutation observed ocean optic axis orbit oscillations parallax parallel particles passing perigee perihelion period phenomena planet plate polarized poles position produce quantity reflected refraction retrograde motion revolution revolve right angles rings rotation satellites Saturn secular solar solid sound space spheroid square stars substances sun and moon sun's surface temperature terrestrial theory tides tion tourmaline transmitted tricity undulations variations varies velocity vibrations voltaic waves wire
Popular passages
Page 432 - ... the squares of the periodic times of the planets are proportional to the cubes of their mean distances from the sun.
Page 432 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Page 29 - 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 fixed 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 407 - ... the firmament of large stars, into which the central cluster would be seen projected, and (owing to its greater distance) appearing like it to consist of stars much smaller than those in other parts of the heavens. "Can it be,'' asks Sir J. Herschel, " that we have here a brother system, bearing a real physical resemblance and strong analogy of structure to our own ?
Page 317 - The spritsail yard and mizzen boom were lighted by the reflection, as if gas lights had been burning directly below them ; and until just before daybreak, at four o'clock, the most minute objects were distinctly visible. Day broke very slowly, and the sun rose of a fiery and threatening aspect. Rain followed. Captain Bonnycastle caused a bucket of this fiery water to be drawn up ; it was one mass of light, when stirred by the hand, and not in sparks, as usual, but in actual coruscations. A portion...
Page 396 - It is impossible to imagine any thing more tremendous than a conflagration that could be visible at such a distance.
Page 436 - The circumference of every circle is supposed to be divided into 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, and these into thirds, fourths, &c.
Page 114 - ... them requires. Hence, on account of the Inertia of the waters, if the tides be considered relatively to the whole earth, and open sea, there is a meridian about 30° eastward of the moon, where it is always high water both in the hemisphere where the moon is and in that which is opposite. On the west side of this circle the tide is flowing, on the east it is ebbing, and on every part of the meridian at 90° distant, it is low water.
Page iii - If I have succeeded in my endeavour to make the laws by which the material world is governed, more familiar to my countrywomen, I shall have the gratification of thinking, that the gracious permission to dedicate my book to your Majesty has not been misplaced.