Scientific Dialogues: Intended for the Instruction and Entertainment of Young People : in which the First Principles of Natural and Experimental Philosophy are Fully Explained, المجلد 1Baldwin, Cradock, and Joy, 1825 |
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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 Father feet figure fixed stars force fulcrum full moon globe greater half heat heavens hemisphere hence Herschel horizon inch inclined plane inhabitants 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 philosophy planets Plate polar circles poles pound pound weight principle pulleys rays reason retrograde motion revolve 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