Astronomy Without MathematicsSociety for Promoting Christian Knowledge, 1883 - 423 Seiten |
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Häufige Begriffe und Wortgruppen
angle aphelion apparent diameter apses Astronomer Royal astronomers axis calculations called centre centrifugal force circle comets cube density difference differential force disturbances earth earth's attraction earth's rotation Easter eccentricity equator equinox eye-glass farther focal length friction full moon glass globe going round golden numbers gravity half heat hemisphere Herschel horizon inclined increase Jupiter Jupiter's latitude less libration light longitude lunar mass mean distance measured Mercury meridian meteors Metonic cycle million miles moon's distance motion move nearly nodes object-glass oblique observations orbit parallax pencil perigee perihelion period planets pole precession Proctor proportion quadrature radius rays refraction ring round the earth round the sun satellites Saturn side sidereal sidereal day Sir G solar eclipse sphere spheroid square stars sun and moon sun's distance surface synodical period syzygy tangential force telescope theory tidal force tide total eclipse transit Transit of Venus Uranus varies inversely velocity Venus weight
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Seite 373 - A' MB' are similar, and A'B' B'M AB BM' So in this case, as before, the size of the image is to the size of the object, as the distance of the image from the mirror is to the distance of the object from the mirror.
Seite 321 - The orbit of each planet is an ellipse, having the sun in one of its foci. II. The radius vector joining the sun to the planet sweeps over equal areas in equal times. III. The squares of the periodie times of the several planets vary as the cubes of their mean distances from the sun.
Seite 427 - BRITISH BIRDS IN THEIR HAUNTS : being a Popular Account of the Birds which have been observed in the British Isles, their Haunts and Habits. By the late Rev. CA JOHNS, BA, FLS Post 8vo, cloth boards ... ... ... ... 7 6 CAPTAIN EVA : the Story of a Naughty Girl.
Seite 38 - If there were a real proof that the Sun is in the centre of the universe, that the Earth is in the third heaven, and that the Sun does not go round the Earth but the Earth round the Sun, then we should have to proceed with great circumspection in explaining passages of Scripture which appear to teach the contrary...
Seite 167 - Sunday letter, or the day of the week for any given day of the month, is wrong for any year before September 1752.
Seite 237 - I cannot conjecture what is the cause of these errors, but I am inclined, in the first instance, to ascribe them to some error in the perturbations. There is no error in the pure elliptic theory (as I found by examination some time ago). If it be the effect of any unseen body, it will be nearly impossible ever to find out its place.
Seite 426 - Places," &c. With numerous Woodcuts. Crown 8vo. Cloth boards, 7s. 6d. •A HISTORY OF THE JEWISH NATION. From the Earliest Times to the Present Day. By the late EH PALMER, Esq., MA, Fellow of St. John's College, Author of "The Desert of the Exodus,
Seite 425 - HEATH. With Fifteen Plates, elaborately drawn, life size, exquisitely coloured from Nature, and accompanied by descriptive text : all the species of British Ferns, which comprise a large proportion of the Ferns of America, and many other parts of the World. Elegantly bound in cloth, 8s.
Seite 167 - TO find the Dominical or Sunday Letter for any given Year of our Lord, add to the Year its fourth part, omitting fractions, and also the Number, which in Table I.
Seite 334 - As the stars recede into distance, so time recedes with them ; and there may be, and probably are, stars from which Noah might be seen stepping into the ark, Eve listening to the temptation of the serpent, or that older race, eating the oysters and leaving the shell-heaps behind them, when the Baltic was an open sea. Could we but compare notes, something might be done ; but of this there is no present hope, and without it there will be no science of history.