Scientific Dialogues: Intended for the Instruction and Entertainment of Young People: in which the First Principles of Natural and Experimental Philosophy are Fully Explained, Volume 1J. Grigg, T. Desilver, 1829 - Science |
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Page 147
... Venus , or Mars . Ju- piter , as you observe by the figure , has four moons : Saturn has seven : and the Herschel ( which also goes by the name of the Georgium Šidus ) has six ; these for want of room are not drawn in the plate ...
... Venus , or Mars . Ju- piter , as you observe by the figure , has four moons : Saturn has seven : and the Herschel ( which also goes by the name of the Georgium Šidus ) has six ; these for want of room are not drawn in the plate ...
Page 148
... Venus occupies a wider way ; The early harbinger of night and day : More distant still our globe terraqueous turns , Nor chills intense , nor fiercely heated burns . Around her rolls the lunar orb of light , Trailing her silver glories ...
... Venus occupies a wider way ; The early harbinger of night and day : More distant still our globe terraqueous turns , Nor chills intense , nor fiercely heated burns . Around her rolls the lunar orb of light , Trailing her silver glories ...
Page 219
... Venus is the second in order . These are called inferior planets . Charles . Why are they thus denominated ? Tutor . Because they both revolve in orbits which are included within that of the earth ; thus ( Plate v . Fig . 2. ) Mercury ...
... Venus is the second in order . These are called inferior planets . Charles . Why are they thus denominated ? Tutor . Because they both revolve in orbits which are included within that of the earth ; thus ( Plate v . Fig . 2. ) Mercury ...
Page 223
... Venus , Tutor . We now proceed to Venus , the second planet in the order of the solar system , but by far the most beautiful of them all : Fairest of stars , last in the train of night , If better thou belong not to the dawn , Sure ...
... Venus , Tutor . We now proceed to Venus , the second planet in the order of the solar system , but by far the most beautiful of them all : Fairest of stars , last in the train of night , If better thou belong not to the dawn , Sure ...
Page 224
... Venus than with us . Charles . Venus appears to us larger sometimes than at others . Tutor . She does ; and this , with other particu- lars , I will explain by means of a figure . Sup- pose s ( Plate VII . Fig 17. ) to be the sun , T ...
... Venus than with us . Charles . Venus appears to us larger sometimes than at others . Tutor . She does ; and this , with other particu- lars , I will explain by means of a figure . Sup- pose s ( Plate VII . Fig 17. ) to be the sun , T ...
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Common terms and phrases
advantage gained angle appear astronomers attraction of cohesion attraction of gravitation axis ball body called centre of gravity centre of motion Charles clock consequently CONVERSATION days and nights degrees diameter distance diurnal motion earth ecliptic Emma Ephemeris equal equator explain fall Father feet fixed stars force fulcrum full moon globe greater half heat heavens hemisphere hence Herschel horizon inch inclined plane James journey Jupiter kind law of motion length less lever light line of direction marble Mars matter means mechanical power Mercury millions of miles minutes moon's move nearer observe orbit papa perpendicular philosophy planets polar circles poles pound pound weight principle proportion pulleys rays reason retrograde motion revolves rise rotation round the sun Saturn screw seen sidereal day Solar System space passed sun's superior planets suppose surface tides tion turn Tutor velocity Venus visible wedge weight
Popular passages
Page 223 - Fairest of stars, last in the train of night, If better thou belong not to the dawn, Sure pledge of day, that crown'st the smiling morn With thy bright circlet, praise him in thy sphere, While day arises, that sweet hour of prime.
Page 206 - Less than archangel ruined, and the excess Of glory obscured ; as when the sun, new risen, Looks through the horizontal misty air Shorn of his beams, or from behind the moon, In dim eclipse, disastrous twilight sheds On half the nations, and with fear of change Perplexes monarchs.
Page 75 - Powers, are certain simple instruments, commonly employed for raising greater weights, or overcoming greater resistances, than could be effected by the natural strength without them. These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 250 - When even at last the solemn hour shall come, And wing my mystic flight to future worlds, I cheerful will obey; there, with new powers, Will rising wonders sing. I cannot go Where universal love not smiles around, Sustaining all yon orbs, and all their suns; From seeming evil still educing good, And better thence again, and better still, In infinite progression.
Page 120 - To ask or search I blame thee not, for heaven Is as the book of God before thee set, Wherein to read his wondrous works, and learn His seasons, hours, or days, or months, or years.
Page 188 - evidence of things not seen," in the fulness of Divine grace ; and was profound on this, the greatest concern of human life, while unable even to comprehend how the " inclination of the earth's axis to the plane of its orbit" could be the cause of the change of the seasons.
Page 239 - Lo ! from the dread immensity of space Returning, with accelerated course, The rushing comet to the Sun descends ; And as he sinks below the shading earth, With awful train projected o'er the Heavens, The guilty nations tremble.
Page 198 - Were slunk, all but the wakeful nightingale ; She all night long her amorous descant sung; Silence was pleas'd: now glow'd the firmament With living sapphires; Hesperus, that led The starry host, rode brightest, till the moon Rising in clouded majesty, at length Apparent queen unveil'd her peerless light, And o'er the dark her silver mantle threw.
Page 60 - It is a law of nature, with respect to matter, that every motion and change of motion is proportional to the force impressed, and in the direction of that force.
Page 196 - But opposite in levell'd west was set His mirror, with full face borrowing her light From him, for other light she needed none In that aspect, and still that distance keeps Till night...