Elements of Natural Philosophy: Embracing the General Principles of Mechanics, Hydrostatics, Hydraulics, Pneumatics, Acoustics, Optics, Electricity, Galvanism, Magnetism, and Astronomy ... |
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angle appear atmosphere attraction axis ball bottom called centre of gravity circle colours comets concave constellations convex convex lens copper cylinder Describe diameter direction distance diurnal motion Earth eclipse effect electricity equal equator equinox experiment fall feet figure fixed stars fluid focus force Give the illustration glass globe heavenly bodies heavens hence Herschel horizon inches inclined inclined plane length lens lever liquid luminous lunar eclipse machine magnet means Mercury meridian metal miles mirror Moon motion move object oblique Observation opposite orbit passing perpendicular pipes piston planet plate pole position pressure principle produced pulley rays of light reflected reflecting telescope refraction represented retina revolution revolve rise seen side solar solar eclipse space specific gravity Sun's superior conjunction supposed surface telescope tides tion tube valve velocity Venus vessel vibrations weight wheel wire wood-cut zinc