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" ... rule exactly in such a posture that the refractions of the rays at their emergence out of the prism might be equal to that at their incidence on it. This prism had some veins running along within the glass from one end to the other, which scattered... "
Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ... - Page 36
by Henry Enfield Roscoe - 1873 - 484 pages
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Opticks: Or, A Treatise of the Reflections, Refractions, Inflections and ...

Isaac Newton - 1730 - 382 pages
...particularly with a Prifm which feemed free from fuch Veins, and whofe refracting' Angle was 622 Degrees, I found the 'Length of the Image 9! or 10 Inches at the diftance of i8| Feet from the Prifm, the Breadth of the Hole in the Window-fhut being \ of an Inch,...
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Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ...

Henry Enfield Roscoe - 1870 - 508 pages
...some veins running along within the glass from one end to the other, which scattered some of the sun's light irregularly, but had no sensible effect in increasing...angle was 62£°. I found the length of the image 9f or 10 inches at the distance of 18^ feet from the prism, the breadth of the hole in the window-shut...
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Spectrum Analysis -- Six Lectures

Henry E. Roscoe - 1869 - 372 pages
...some veins running along within the glass from one end to the other, which scattered some of the sun's light irregularly, but had no sensible effect in increasing...refracting angle was 62|°. I found the length of the image 9f or 10 inches at the distance of 18| feet from the prism, the breadth of the hole in the window-shut...
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Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1869 - 392 pages
...some veins running along within the glass from oue end to the other, which scattered some of the sun's light irregularly, but had no sensible effect in increasing...free from such veins, and whose refracting angle was G2i°. I found the length of the image 9f- or 10 inches at the distance of 18i feet from the prism,...
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Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1870 - 452 pages
...light irregularly, but hail no sensible effect in increasing the length of the coloured spectrum. Fof I tried the same experiment with other prisms with...such veins, and whose refracting angle was 62|°. 1 found the length of the image 9f or 10 inches at the distance of 18^ feet from the prism, the breadth...
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Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1873 - 554 pages
...some veins running along within the glass from one end to the other, which scattered some of the sun-s light irregularly, but had no sensible effect in increasing...angle was 62£°. I found the length of the image 9f or 10 inches at the distance of 18^ feet from the prism, the breadth of the hole in the window-shut...
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Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ...

Henry Enfield Roscoe - 1873 - 552 pages
...some veins running along within the glass from one end to the other, which scattered some of the sun's light irregularly, but had no sensible effect in increasing...free from such veins, and whose refracting angle was 62i°. I found the length of the image 9J or 10 inches at the distance of 18^ feet from the prism,...
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Scientific Method: Its Philosophy and Its Practice

Frederic William Westaway - 1912 - 474 pages
...some veins running along within the glass from one end to the other, which scattered some of the sun's light irregularly, but had no sensible effect in increasing...experiment with other prisms with the same success. Now the different magnitude of the hole in the window shutter, and different thickness of the prism...
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