 For if this hole be an inch or two long and but a tenth or twentieth part of an inch broad or narrower, the light of the image will be as simple as before, or simpler, and the image will become much broader and therefore more fit to have experiments tried...  Smithsonian Miscellaneous Collections - Page 142by Smithsonian Institution - 1883Full view - About this book
 | Isaac Newton - Optics - 1730 - 432 pages
...its Length parallel to the Prifm ABC. For if this Hole be an Inch or two long, and but a t'enth or twentieth Part of an Inch broad, or narrower; the Light of the Image ft will be as fimple as before, or fimpler, and the Image will become much broader, and there-, fore... | |
 | Robert Smith - Electronic books - 1738 - 402 pages
...length parallel to the length of the prifm. For r£ this hole be an inch or two long and but a tenth or twentieth part of an inch broad,, or narrower, the light of the image pt will be as fimple as before or fan pier; and the image being much broader is therefore fitter to... | |
 | Colin Macfarquhar, George Gleig - Encyclopedias and dictionaries - 1797 - 450 pages
...parallel t« the length of the prifm. For if this hole be an inch or two long, and but a loth or 2Oth part of an inch broad, or narrower, the light of the image// will he as fimple as before, or fimpler ; and the image being much broader, is therefore fitter to have... | |
 | Encyclopaedia Britannica - 1810 - 814 pages
...parallel to the length of the priim. For if this hole be an inch or two long, and but a loth or 2oth part of an inch broad, or narrower, the light of the image /> / will be as l'impie as before, or fimpler ; and the image being much broader, is therefore fitter to have experiments... | |
 | Encyclopedias and dictionaries - 1816 - 778 pages
...parallel to the length of the prifm. For if this hole be an inch or two long, and but a loth or zoth part of an inch broad, or narrower, the light of the image P t will be as fimple as before, or fimpler; and the image, being inuch broader, is therefore fitter... | |
 | Encyclopedias and dictionaries - 1823 - 886 pages
...parallel to the length of the prism. For if this hole be an inch or two long, and but a loth or 20th part of an inch broad, or narrower, the light of the image pt will lie as simple as before, or simpler ; and the image being much broader, is therefore fitter... | |
 | Sir Norman Lockyer - Electronic journals - 1915 - 834 pages
...Hole shaped like a long Parallelogram with its Length parallel to the [refracting edge of the] Prism. For if this Hole be an Inch or two long, and but a...or simpler, and the Image will become much broader, and therefore more fit to have Experiments try'd in its Light than before.' " It is not quite clear... | |
 | Sir Norman Lockyer - Electronic journals - 1915 - 886 pages
...Hole shaped like a long Parallelogram with its Length parallel to the [refracting edge of the] Prism. For if this Hole be an Inch or two long, and but a...or simpler, and the Image will become much broader, and therefore more fit to have Experiments try'd in its Light than before.' " It is not quite clear... | |
 | Philosophical Society of Washington (Washington, D.C.) - Science - 1881 - 902 pages
...the necessity of employing a very small hole or luminous image for obtaining a pure spectrum, and ho pointed out that a narrow slit is still better ; "...thus he missed the consummation of his " oddest and moat considerable detection of nature's operations " — the spectroscope. mic motions generating radiant... | |
 | Philosophical Society of Washington (Washington, D.C.) - Science - 1883 - 440 pages
...quarter elapsed before the spectral lines were first detected by WH WOLLASTON, (Phil. Trans. Roy. Soe. June 24, 1802: vol. xcn, p. 365;) Newton was fully...detection of nature's operations " — the spectroscope. f A billion (as is sufficiently indicated by the term itself) is the " second power of a million ;"... | |
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