 | Isaac Newton - 1730 - 432 pages
...the Light there decaying and vanifhing by degrees. The Breadth of this Image anfwered to the Sun's Diameter, and was about two Inches and the eighth...Image was eighteen Feet and an half diftant from the Prifni, and at this diftance that Breadth, if diminifhed by the Diameter of the Hole in the Window-fhut,... | |
 | Isaac Newton - 1730 - 403 pages
...the Light there decaying and vanifhing by degrees. The Breadth of this Image anfwered to the Sun's Diameter, and was about two Inches and the eighth...the Prifm, and at 'this diftance that Breadth, if di-* minimed by the Diameter of the Hole in the Window-mut, that is by a quarter of an Inch, fubtended... | |
 | 1816 - 764 pages
...of finding timber, calks, .and other floating articles of the wrecked vefleis, of which 6 or 8 arc two inches and the eighth part 'of an inch, including -the penumbra. Newton. tv) PtNUMBRA, inaftronomy, is a partial (harie obferved between the perfeft lhadow and the... | |
 | Henry Enfield Roscoe - 1870 - 514 pages
...the light there decaying and vanishing by degrees. The breadth of this image answered to the sun's diameter, and was about two inches and the eighth...the penumbra. For the image was eighteen feet and a half distant from the prism; and at this distance that breadth, if diminished by the diameter of... | |
 | Henry E. Roscoe - 1869 - 372 pages
...the light there decaying and vanishing by degrees. The breadth of this image answered to the sun's diameter, and was about two inches and the eighth...the penumbra. For the image was eighteen feet and a half distant from the prism, arid at this distance that breadth if diminished by the diameter of... | |
 | sir Henry Enfield Roscoe - 1869 - 396 pages
...breadth of this image answered to the sun's diameter, and was about two inches and the eighth purl, of an inch, including the penumbra. For the image was eighteen feet and a half distant from the prism, and at this iliMtunce that breadth if diminished by the diameter of... | |
 | sir Henry Enfield Roscoe - 1870 - 452 pages
...the light there decaying and vanishing by degrees. The breadth of this image answered to the sun-s diameter, and was about two inches and the eighth...the penumbra. For the image was eighteen feet and a half distant from the prism ; and at this distance that breadth, if diminished by the diameter of... | |
 | Henry Enfield Roscoe - 1873 - 542 pages
...the light there decaying and vanishing by degrees. The breadth of this image answered to the sun's diameter, and was about two inches and the eighth...the penumbra. For the image was eighteen feet and a half distant from the prism; and at this distance that breadth, if diminished by the diameter of... | |
 | Sir William Augustus Tilden - 1899 - 284 pages
...the light there decaying and vanishing by degrees. The breadth of this image answered to the sun's diameter, and was about two inches and the eighth...the penumbra. For the image was eighteen feet and a half distant from the prism ; and at this distance that breadth, if i Newton's "Opticks," Book i.... | |
 | Hugh Frank Newall - 1910 - 188 pages
...the light there decaying and vanishing by degrees. The breadth of this image answered to the sun's diameter, and was about two inches and the eighth part of an inch, including the penumbra. EX B Fio. 17. For the image was eighteen feet and a half distant from the prism, and at this distance... | |
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... oblong and not oval, but terminated with two rectilinear and parallel sides, and two semicircular ends. On its sides it was bounded pretty distinctly, but on its ends very confusedly and indistinctly, the light there decaying and vanishing by degrees.... 
