The Planetarium and Astronomical Calculator |
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Common terms and phrases
angle apogee approach of centres Aries ascending node Astronomers attractive power body calculated centrifugal force Comets conjunction consequently descending diameter as seen difference Dionysian Period Dominical letters earth Earth's shadow enter Table equal equator equinox fall fixed stars full Moon Geocentric longitude given gravity greatest grees H M. S. half Heavens heliocentric Herschel horary motion horizon Interrogations for Section Jupiter light longitude lunar Lunar Eclipses mean motion mean new Moon Middle apparent millions of miles minutes Moon in March Moon's mean anomaly Moon's node Moon's orbit Moon's true move nearer north pole Old Style opposite penumbra perigee Pisces planet projectile force rays revolves rise round the Sun satellites Saturn seconds semi-diameter signs and degrees Solar System south pole subtract Sun and Moon Sun's distance Sun's mean Anomaly Sun's mean distance Sun's true surface syzygy tance telescope Tides tion velocity Venus visible
Popular passages
Page 250 - Aries the Ram, Taurus the Bull, Gemini the Twins, Cancer the Crab, Leo the Lion, Virgo the Virgin, Libra the Balance, Scorpio the Scorpion, Sagittarius the Archer, Capricornus the Goat, Aquarius the Waterbearer, and Pisces the Fishes...
Page 14 - Vast concave ! ample dome ! wast thou design'd A meet apartment for the Deity ? — •Not so; that thought alone thy state impairs, Thy lofty sinks, and shallows thy profound, And straitens thy diffusive ; dwarfs the whole, And makes a universe an orrery.
Page 255 - Equinox fall on the 21st of March, as it did at the time of that council. And to prevent the like variation for the future, he ordered that, three days...
Page 14 - Thousands of thousands of suns, multiplied without end, and ranged all around us, at immense distances from each other, attended by ten thousand times ten thousand worlds, all in rapid motion, yet calm, regular, and harmonious, invariably keeping the paths prescribed them ; and these worlds peopled with myriads of intelligent beings, formed for endless progression in perfection and felicity.
Page 2 - ANSLEY, of the said district, hath deposited in this office the title of a book, the title of which is in the words following, to wit : " Elements of Literature ; or, an Introduction to the Study of Rhetoric and Belles Lettres.
Page 43 - After the lapse of years, we perceive it again returning to our system, and tracing a portion of the same orbit round the sun, which it had formerly described.
Page 11 - ... by their influences. Whoever imagines that they were created only to give a faint glimmering light to the inhabitants of this globe, must have a very superficial knowledge of Astronomy, and a mean opinion of the Divine Wisdom...
Page 119 - Moon, °.jthe,. is extended as far as the Earth ; and draws the wa- cov^red'by tcrs under the torrid zone, acting upon places where KEPLER. it is vertical, insensibly on confined seas and bays, but sensibly on the ocean, whose beds are large, and the waters have the liberty of reciprocation ; that is, of rising and falling.
Page 106 - ... so as to bestow more or less light on all parts of the earth, as their several circumstances and seasons render it more or less serviceable. About the equator, where there is no variety of seasons, and the weather...
Page 13 - ... so that if the remoter planets have the sun's light fainter by day than we, they have an addition made to it morning and evening by one or more of their moons, and a greater quantity of light in the night time.