The Planet Earth: An Astronomical Introduction to GeographyMacmillan, 1894 - Всего страниц: 108 |
Результаты поиска по книге
Результаты 1 – 5 из 18
Стр. 15
... have been described . The facts thus obtained must now be extended to the whole sky . Again using a pair of compasses for the measurement of dimensions upon the celestial sphere , let one leg be fixed I 15 THE HEAVENS WE SEE.
... have been described . The facts thus obtained must now be extended to the whole sky . Again using a pair of compasses for the measurement of dimensions upon the celestial sphere , let one leg be fixed I 15 THE HEAVENS WE SEE.
Стр. 34
... direction of vibration altered . The rotation of the gallows from which the pendulum hangs twists the thread of suspension , but fails to move the pendulum FIG . 19. - A few of the triangles measured. 34 CHAP . THE PLANET EARTH.
... direction of vibration altered . The rotation of the gallows from which the pendulum hangs twists the thread of suspension , but fails to move the pendulum FIG . 19. - A few of the triangles measured. 34 CHAP . THE PLANET EARTH.
Стр. 36
... measured by the apparent move- ments of the stars . No matter what stars are observed , the interval between two successive south- ings is exactly the same . Indeed , from the con- dition of things such a result is to be expected . The ...
... measured by the apparent move- ments of the stars . No matter what stars are observed , the interval between two successive south- ings is exactly the same . Indeed , from the con- dition of things such a result is to be expected . The ...
Стр. 43
... measuring angles . To say that an angle is so many yards or feet wide is , of course , meaningless ; it is just as absurd as expressing the time of day in miles . We use inches , feet , yards , and miles to measure linear dimensions ...
... measuring angles . To say that an angle is so many yards or feet wide is , of course , meaningless ; it is just as absurd as expressing the time of day in miles . We use inches , feet , yards , and miles to measure linear dimensions ...
Стр. 44
An Astronomical Introduction to Geography Sir Richard Gregory. can illustrate the principle of angular measurement by means of a watch ( Fig . 17 ) . The dial of a watch or clock has sixty points marked upon it , each represent- ing one ...
An Astronomical Introduction to Geography Sir Richard Gregory. can illustrate the principle of angular measurement by means of a watch ( Fig . 17 ) . The dial of a watch or clock has sixty points marked upon it , each represent- ing one ...
Другие издания - Просмотреть все
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
Популярные отрывки
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.