History of the Royal Society: From Its Institution to the End of the Eighteenth CenturyAbridgement of the philosophical transactions from 1665 to the end of the year 1800. |
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Page 323
... refraction . The existence of this refraction , at least when objects were near the horizon , had been observed by Ptolemy , and noticed by all succeeding observers ; but they had ascribed it solely to the vapours which they conceived ...
... refraction . The existence of this refraction , at least when objects were near the horizon , had been observed by Ptolemy , and noticed by all succeeding observers ; but they had ascribed it solely to the vapours which they conceived ...
Page 324
... refraction is the same with regard to all the celestial bodies , and it continues to the very zenith ; though , before it reaches that point , it becomes insensible . Newton afterwards gave a much more accurate table of refractions ...
... refraction is the same with regard to all the celestial bodies , and it continues to the very zenith ; though , before it reaches that point , it becomes insensible . Newton afterwards gave a much more accurate table of refractions ...
Page 345
... refraction . Dr. Bradley as- sisted him in his observations . The apparatus was fitted up in November , 1725 ; and on the 3d of December y Draconis was observed as it passed over the zenith , and its situation carefully taken with the ...
... refraction . Dr. Bradley as- sisted him in his observations . The apparatus was fitted up in November , 1725 ; and on the 3d of December y Draconis was observed as it passed over the zenith , and its situation carefully taken with the ...
Page 346
... refraction might account for this phenomena : but here nothing satisfactory occurred . At last , when he despaired of being able to account for the phenomena which he had observed , a satisfactory explanation of it occurred to him all ...
... refraction might account for this phenomena : but here nothing satisfactory occurred . At last , when he despaired of being able to account for the phenomena which he had observed , a satisfactory explanation of it occurred to him all ...
Page 359
... refraction , and must therefore have had some knowledge of dioptrics ; though he no where explains himself on the subject . The ancients were acquainted with plain mirrors , and with the use of glass spheres filled with * Round the ...
... refraction , and must therefore have had some knowledge of dioptrics ; though he no where explains himself on the subject . The ancients were acquainted with plain mirrors , and with the use of glass spheres filled with * Round the ...
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acid afterwards M. D. anatomy ancients animals appears April April 19 April 21 astronomers Bart blood body botany Brook Taylor carbonic acid celebrated Charles colours conceived concilio considerable considered contains contrived curious cycloid Descartes discovery disease Ditto Duke Earl earth electricity eorum experiments feet George gives glass Halley heat Hence Henry Hippocrates Ibid important inches James John July June June 13 Leibnitz light Linnæus London Lord March March 13 March 9 mathematical mathematicians means mechanical philosophy medicine mention method Mons motion nature Newton nostris observations opinion paper Paris petrifactions Phil Philosophical Transactions physician plants præsidem præsidi produced Prof Ptolemy published quantity rays refraction Royal Society Sept sive species specific gravity successoribus Surgeon tempore theory Thomas tion Trans tube vegetable velocity vessels volume weight William