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 1 |
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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 fall Father feet figure fixed stars force fulcrum full moon globe greater heat heavens hemisphere hence Herschel horizon inch inclined plane James journey Jupiter kind larger 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 Plate polar circles poles pound pound weight principle pulleys rays reason retrograde motion revolve rise rotation Saturn screw seen sidereal day solar system space passed superior planets supposed surface tides tion turn Tutor velocity Venus visible wedge weight