Philosophical Transactions of the Royal Society of London, Volume 103W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1813 |
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Pagina 38
... four inches from the eye ; and , by directing his attention to a more distant point , he could prevent them from meeting till they were seven inches from the eye , after which they continued apparently united the whole length of the ...
... four inches from the eye ; and , by directing his attention to a more distant point , he could prevent them from meeting till they were seven inches from the eye , after which they continued apparently united the whole length of the ...
Pagina 40
... four inches and a quarter from the eye , the pupil , in half an hour after the application of the belladonna , became completely dilated , and in consequence of this the sight at first was confused ; but both on that day , and for two ...
... four inches and a quarter from the eye , the pupil , in half an hour after the application of the belladonna , became completely dilated , and in consequence of this the sight at first was confused ; but both on that day , and for two ...
Pagina 44
... four inches and a quarter . They then separate , and continue to diverge . With my left eye , the lines do not appear to meet nearer than four inches , and they continue united as far as five inches and a quarter , after which they also ...
... four inches and a quarter . They then separate , and continue to diverge . With my left eye , the lines do not appear to meet nearer than four inches , and they continue united as far as five inches and a quarter , after which they also ...
Pagina 51
... four smaller tetrahedrons from its solid angles . ( Fig . 1. ) 1 The substance which most readily admits of division by fracture into these forms is fluor spar ; and there is no diffi- culty in obtaining a sufficient quantity for such ...
... four smaller tetrahedrons from its solid angles . ( Fig . 1. ) 1 The substance which most readily admits of division by fracture into these forms is fluor spar ; and there is no diffi- culty in obtaining a sufficient quantity for such ...
Pagina 54
... four balls so in contact , or the planes touch- ing their surfaces , would include a regular tetrahedron , having all its sides equilateral triangles . The construction of an octohedron , by means of spheres alone , is as simple as that ...
... four balls so in contact , or the planes touch- ing their surfaces , would include a regular tetrahedron , having all its sides equilateral triangles . The construction of an octohedron , by means of spheres alone , is as simple as that ...
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