Lessons on the globes1842 |
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Página 119
... vapours and minute solid particles which float in our atmos- phere , and perhaps also , upon the actual material atoms of the air itself , " is rendered so sensible to our eyes , as to be the means of conferring the important blessing ...
... vapours and minute solid particles which float in our atmos- phere , and perhaps also , upon the actual material atoms of the air itself , " is rendered so sensible to our eyes , as to be the means of conferring the important blessing ...
Página 166
... vapour But solids , themselves , by the abstraction of heat , shrink in dimen- sion , and at the same time become harder and more brittle , yielding less to pressure , and permitting less separation between their parts by tension . * It ...
... vapour But solids , themselves , by the abstraction of heat , shrink in dimen- sion , and at the same time become harder and more brittle , yielding less to pressure , and permitting less separation between their parts by tension . * It ...
Página 172
... vapour than the air over land , the saltness of the waters of the ocean , amongst other benefits , restricts their tendency to evaporation . Salt water has even the power of drying the air , when it contains vapour in great quantity ...
... vapour than the air over land , the saltness of the waters of the ocean , amongst other benefits , restricts their tendency to evaporation . Salt water has even the power of drying the air , when it contains vapour in great quantity ...
Página 176
... vapour slowly escaped from the surface of a lake , as in the same quantity of vapour from a boiling cauldron . If it were not that in thawing , each particle of the frozen body in succession requires its portion of heat , its ...
... vapour slowly escaped from the surface of a lake , as in the same quantity of vapour from a boiling cauldron . If it were not that in thawing , each particle of the frozen body in succession requires its portion of heat , its ...
Página 177
... Vapour , 142 . Carbonic Acid , . ( a ) This removes a difficulty which the pupil may probably have found , in conceiving how perpetual snow should exist even in tro- pical climates . * That is , the heat which had become latent in its ...
... Vapour , 142 . Carbonic Acid , . ( a ) This removes a difficulty which the pupil may probably have found , in conceiving how perpetual snow should exist even in tro- pical climates . * That is , the heat which had become latent in its ...
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Términos y frases comunes
altitude appear Arcturus astronomers atmosphere attraction axis azimuth beams Boötes brass meridian brazen meridian Bridgewater Treatise bring the given Canis Major Cape CELESTIAL GLOBE centre centrifugal force circle coincide consequently constellations corresponding culminating declination diameter difference direction disk distance diurnal diurnal arc earth earth's surface east eastward ecliptic electricity elevated equal equator equinoctial exactly feet fluid Fomalhaut force Frigid Zone given place heat heavenly body hemisphere Hence Herschel horizon inclined inhabitants instant John Herschel Jupiter Jupiter's latitude length light London longitude magnet mass midnight miles minutes moon moon's motion nearly node noon north pole oblique observations orbit parallax particles pass period plane portion position PROBLEM pupil quadrant rays right ascension rising rotation satellites Saturn seen shadow sidereal day solar south pole sphere star sun's place supposed telescope TERRESTRIAL GLOBE tion twilight Uranus vapour velocity Venus vertical whilst zenith
Pasajes populares
Página 244 - For thus saith the Lord that created the heavens; God himself that formed the earth and made it; he hath established it, he created it not in vain, he formed it to be inhabited: I am the Lord; and there is none else.
Página 6 - The one has suggested to me that, beyond and above all that is visible to man, there may lie fields of creation which sweep immeasurably along, and carry the impress of the Almighty's hand to the remotest scenes of the universe : the other suggests to me...
Página xi - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Página 403 - This disregard is neither supercilious nor causeless. The constellations seem to have been almost purposely named and delineated to cause as much confusion and inconvenience as possible. Innumerable snakes twine through long and contorted areas of the heavens, where no memory call follow them ; bears, lions, and fishes, large and small, northern and southern, confuse all nomenclature, &c.
Página 397 - Venus a pea, on a circle of 284 feet in diameter ; the Earth also a pea, on a circle of 430 feet ; Mars a rather large pin's head, on a circle of 654 feet ; the Asteroids, grains of sand, in orbits of from 1000 to 1200 feet; Jupiter a moderate-sized orange, in a circle nearly half a mile across...
Página 227 - As he sat alone in a garden, he fell into a speculation on the power of gravity ; that as this power is not found sensibly diminished at the remotest distance from the centre of the earth, to which we can rise, neither at the tops of the loftiest buildings, nor even on the summits of the highest mountains ; it appeared to him reasonable to conclude, that this power must extend much...
Página 161 - God," as was said by the ancients, "works by geometry:" the legislation of the material universe is necessarily delivered in the language of mathematics ; the stars in their courses are regulated by the properties of conic sections, and the winds depend on arithmetical and geometrical progressions of elasticity and pressure.
Página 284 - ... the earth. The fall of meteoric stones is much more frequent than is generally believed. Hardly a year passes without some instances occurring ; and if it be considered that only a small part of the earth is inhabited, it may be presumed that numbers fall...
Página 6 - I tread upon, the other redeems it from all its insignificance, for it tells me that in the leaves of every forest, and in the flowers of every garden, and in the waters of every rivulet, there are worlds teeming with life, and numberless as the glories of the firmament.
Página 214 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.