The Planet Earth: An Astronomical Introduction to GeographyMacmillan, 1894 - Всего страниц: 108 |
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Стр. 15
... minute circle round the stationary point . All other stars behave in a similar manner . If , when facing the north , you imagine one of the legs of a pair of compasses to be fixed in the position of the pole , while the other leg ...
... minute circle round the stationary point . All other stars behave in a similar manner . If , when facing the north , you imagine one of the legs of a pair of compasses to be fixed in the position of the pole , while the other leg ...
Стр. 36
... minutes less than twenty - four hours , the earth would have made a complete rotation under the pendulum , and the ... minutes , instead of 23 hours 56 minutes , long . The latter value is found by obser- vations of the heavens . " " If ...
... minutes less than twenty - four hours , the earth would have made a complete rotation under the pendulum , and the ... minutes , instead of 23 hours 56 minutes , long . The latter value is found by obser- vations of the heavens . " " If ...
Стр. 42
... minutes to perform one rotation . The axis of rotation coincides with the shortest diameter , and the poles are at its extremities . The apparent motion of the heavens from east to west , in con- sequence of which celestial bodies rise ...
... minutes to perform one rotation . The axis of rotation coincides with the shortest diameter , and the poles are at its extremities . The apparent motion of the heavens from east to west , in con- sequence of which celestial bodies rise ...
Стр. 43
... minutes , and hours ; and to properly express the sizes of angles , certain definite units of reference must be employed . The first thing necessary , then , is to determine the unit employed in angular measurement . If circles of any ...
... minutes , and hours ; and to properly express the sizes of angles , certain definite units of reference must be employed . The first thing necessary , then , is to determine the unit employed in angular measurement . If circles of any ...
Стр. 44
... minutes on the dial of the clock at Westminster are taken , or those of the smallest ladies ' timekeeper , two lines drawn from two successive points to the centre . include precisely the same angle in each case . The minute hand of a ...
... minutes on the dial of the clock at Westminster are taken , or those of the smallest ladies ' timekeeper , two lines drawn from two successive points to the centre . include precisely the same angle in each case . The minute hand of a ...
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The Planet Earth: An Astronomical Introduction to Geography Sir Richard Gregory Полный просмотр - 1894 |
The Planet Earth: An Astronomical Introduction to Geography Sir Richard Gregory Полный просмотр - 1894 |
The Planet Earth: An Astronomical Introduction to Geography Sir Richard Gregory Полный просмотр - 1894 |
Часто встречающиеся слова и выражения
Aldebaran Algol Andromeda angle angular distance apparent motions apparent path appears to travel Arcturus astronomers attraction Auriga axis of rotation Betelgeuse bright star Canis Major CANIS MINOR Cassiopeia celestial bodies celestial equator celestial pole celestial sphere centre Cepheus circle circumference constellation Copernican Copernicus Denebola described diameter direction distance round diurnal motion due south earth earth's equator eastern horizon ecliptic equinox fact globe Heaven Heaven Heaven hence journey Jupiter known lamp latitude lead ball length light luminary mass measure Mercury meridian midnight miles minutes movement moving round night noonday north and south north celestial pole object observed orbits Orion pass pendulum planets polar regions Pole-Star position Procyon Ptolemy Regulus revolution revolve round rising and setting round the sun Saturn seen side spinning stationary point summer solstice sun's suppose surface theory tion travel round triangle twilight Venus visible watch zodiac
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Стр. 59 - And God said, Let there be lights in the firmament of the heaven to divide the day from the night ; and let them be for signs and for seasons, and for days,
Стр. 41 - That very law* which moulds a tear, And bids it trickle from its source, That law preserves the earth a sphere, And guides the planets in their course.
Стр. 63 - The Ram, the Bull, the heavenly Twins, And next the Crab the Lion shines, The Virgin and the Scales ; The Scorpion, Archer, and He-goat, The Man that holds the watering-pot, And Fish with glittering tails.
Стр. 5 - But I am constant as the northern star, Of whose true-fix'd, and resting quality, There is no fellow in the firmament.
Стр. 62 - For several ages he saw in the countless worlds that sparkle through space like the bubbles of a shoreless ocean only the petty candles, the household torches, that Providence had been pleased to light for no other purpose but to make the night more agreeable to man. Astronomy has corrected this delusion of human vanity : and man now reluctantly confesses that the stars are worlds, larger and more glorious than his own, — that the earth on which he crawls is a scarce visible speck on the vast chart...
Стр. 5 - The skies are painted with unnumber'd sparks; They are all fire and every one doth shine; But there's but one in all doth hold his place.
Стр. 61 - Thro' cells of madness, haunts of horror and fear, That I come to be grateful at last for a little thing : My mood is changed, for it fell at a time of year When the face of night is fair on the dewy downs, And the shining daffodil dies, and the Charioteer And starry Gemini hang like glorious crowns Over Orion's grave low down in the west...
Стр. 104 - Every particle in the universe attracts every other particle with a force which is directly proportional to the product of the masses of the particles and inversely proportional to the square of the distance between them.
Стр. 62 - Man is arrogant in proportion to his ignorance. Man's natural tendency is to egotism. Man, in his infancy of knowledge, thinks that all creation was formed for him. For several ages he saw in the countless worlds that sparkle through space like the bubbles of a shoreless ocean only the petty candles, the household torches, that Providence had been pleased to light for no other purpose but to make the night more agreeable to man.
Стр. 56 - The specific gravity is the ratio of the weight of a substance to the weight of an equal volume of water.