Lectures on Natural and Experimental Philosophy, Considered in It's Present State of Improvement: Describing in a Familiar and Easy Manner, the Principal Phenomena of Nature ...Hindmarsh, 1794 |
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Common terms and phrases
acid alfo alſo angle angle of incidence apparent magnitude appear arifes atmoſphere axis becauſe bodies cafe caufes cauſe circumftances colours concave concave lens confequently confiderable confidered confifts converging convex lens cornea degree difcovered diftinct diftinctly diſtance diverging equal experiments eye-glafs falt fame fecond feems feen fenfe feparated fhall fhew fhould fide fimilar fire firft firſt fituated fize fmall fmaller focal diftance focus folar folid fome fpeculum fubftances fubject fuch fufficient fuppofe furface glaffes glafs glaſs heat hole inches increaſed itſelf laft lefs lenfes magnifying meaſure mirror moft moſt muft muſt nature nearer neceffary obferve object object-glafs occafion opake paffing parallel particles philofophy placed prifm purpoſe quantity rays of light reafon reflected refracted refrangible reprefented retina ſeen ſmall ſpace ſtate teleſcope thefe theſe thofe thoſe tion tranfparent uſed vapour vifible vifion vitreous humour whofe