Conversations on Natural Philosophy: In which the Elements of that Science are Familiarly Explained and Adapted to the Comprehension of Young Pupils |
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angle angle of incidence appear atmosphere attraction of cohesion axis ball called camera obscura CAROLINE centre of gravity centrifugal force circle cohesive attraction coloured rays concave concave mirror consequently convex degrees dimensions diminished direction distance diurnal motion earth eclipse effect elastic EMILY equal equator fixed stars flected fluid focus fulcrum glass globe greater heat heavier lens less lever liquid Lowry Sc mechanical power mercury meridian mirror moon move natural philosophy nature nearer object obliquely observe orbit particles passing perfectly perpendicular planets Plate pole pressure proceed produced proportion Published by Longman pulley pump quantity of matter rays fall rays of light reflected rays refracting telescope refraction resistance retina rise round the sun shadow shine situated solid bodies sonorous body space specific gravity spring sun's rays supported suppose surface tion tube understand vapour velocity vibrations weight wheel whilst wind