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" Inch, subtended an Angle at the Prism of about half a Degree, which is the Sun's apparent Diameter. But the Length of the Image was about ten Inches and a quarter, and the Length of the Rectilinear Sides about eight Inches; and the refracting Angle of... "
Spectrum analysis, 6 lects - Page 33
by sir Henry Enfield Roscoe - 1870
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A Treatise on Geometrical Optics

Robert Alfred Herman - 1900 - 344 pages
...about half a degree, which is the sun's apparent diameter. But the length of the image was about 10£ inches ; and the refracting angle of the prism, whereby...the image was less, the breadth remaining the same. This image or spectrum was coloured, being red at its least refracted end, and violet at its most refracted...
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The Spectroscope and Its Work

H. F. Newall - 1910 - 163 pages
...by a quarter of an inch, subtended an angle at the prism of about half a degree, which is the Sun's apparent diameter. But the length of the image was...the prism whereby so great a length was made, was 64 degrees. . . . " And therefore seeing by experience it is found that the image is not round but about...
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Scientific Method: Its Philosophy and Its Practice

Frederic William Westaway - 1912 - 439 pages
...diameter. But the length of the image was about 10J inches, and the length of the rectilinear sides about 8 inches; and the refracting angle of the prism whereby so great a length was made, was 64 degrees. With a less angle, the length of the image was less, the breadth remaining the same. If the...
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The Progress of Scientific Chemistry in Our Own Times: With Biographical Notices

Sir William Augustus Tilden - 1913 - 366 pages
...by a quarter of an inch, subtended an angle at the prism of about half a degree, which is the sun's apparent diameter. But the length of the image was...the image was less, the breadth remaining the same. . . . Now, the different magnitude of the hole in the window-shut and different thickness of the prism...
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Opticks: Or a Treatise of the Reflections, Refractions, Inflections and ...

Isaac Newton - 2007 - 416 pages
...Inches; and the refracting Angle of the Prism, whereby so great a Length was made, was 64 degrees. With a less Angle the Length of the Image was less,...was turned about its Axis that way which made the Eays emerge more obliquely out of the second refracting Surface of the Prism, the Image soon became...
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A Treatise on Geometrical Optics

...about half a degree, which is the sun's apparent diameter. But the length of the image was about 10£ inches; and the refracting angle of the prism, whereby...the image was less, the breadth remaining the same. This image or spectrum was coloured, being red at its least refracted end, and violet at its most refracted...
Limited preview - About this book




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