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" A, which can be removed at pleasure. Below the prism is an achromatic eye-piece, having an adjustable slit between the two lenses ; the upper lens being furnished with a screw motion to focus the slit. A side slit, capable of adjustment, admits, when... "
Spectrum Analysis: Six Lectures, Delivered in 1868, Before the Society of ... - Page 181
by Henry Enfield Roscoe - 1870 - 404 pages
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Chemical News and Journal of Industrial Science, Volumes 15-16

1867 - 680 pages
...arrangement at the upper part on the right side is for the purpose of obtaining a supplementary spectrum from any object whose spectrum it is desired to compare...object placed on the stage of the microscope. This object may be either a solution of permanganate of potash in a small sealed tube, a cobalt blue glass,...
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Monthly Journal of Science, and Annals of Biology, Astronomy ..., Volume 4

James Samuelson, William Crookes - 1867 - 672 pages
...by direct vision, and there is an arrangement for the purpose of obtaining a supplementary spectrum from any object whose spectrum it is desired to compare...of the object placed on the stage of the microscope ; which object may be either a solution of permanganate of potash in a small sealed tube, a cobalt-blue...
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The Quarterly Journal of Science, Volume 4

1867 - 652 pages
...by direct vision, and there is an arrangement for the purpose of obtaining a supplementary spectrum from any object whose spectrum it is desired to compare...of the object placed on the stage of the microscope ; which object may be either a solution of permanganate of potash in a small sealed tube, a cobalt-blue...
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Spectrum analysis, 6 lects

sir Henry Enfield Roscoe - 1873 - 548 pages
...instrument is represented in Figs. 50 (page 183) and 55. The prism is contained in a small tube (a), FIG. 55. which can be removed at pleasure, and which...field with that obtained from the object on the stage. « is a brass tube carrying tbe compound direct^vision prism. I, a milled head, with screw motion to...
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Principles of Forensic Medicine

William Augustus Guy, David Ferrier - 1875 - 752 pages
...arrangements for placing side by fide a spectrum of the object on the stnge, and (by the side slit) a second beam of light from any object whose spectrum...the object placed on the stage of the microscope. By means of focussing arrangements, with which the apparatus is supplied, the light can bo readily...
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How to work with the spectroscope

John Browning (F.R.A.S.) - 1878 - 80 pages
...consisting of several parts. The prism is contained in a small tube, A, which can be removed at pleasure. Below the prism is an achromatic eye-piece, having...field with that obtained from the object on the stage (Fig. 24, page 46). A (Fig. 23) is a brass tube carrying the compound direct-vision prism, and has...
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Every boy's book: a complete encyclopædia of sports and amusements, ed. by ...

Every boy - 1881 - 932 pages
...being furnished with a screw motion to focus the slit. A side slit, capable of adjustment, adjusts, when required, a second beam of light from any object...on the stage of the microscope. This second beam of n light strikes against a very small prism suitably placed inside the apparatus, and is reflected up...
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How to Work with the Spectroscope

John Browning (F.R.A.S.) - 1882 - 108 pages
...consisting of several parts. The prism is contained in a small tube, A, which can be removed at pleasure. Below the prism is an achromatic eye-piece, having...the object placed on the stage of the Microscope. 46 This second beam of light strikes against a very small prism suitably placed inside the apparatus,...
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The Microscope: Its History, Construction, and Applications: Being a ...

Jabez Hogg - 1886 - 816 pages
...eye-piece, having an adjustable slit between the two lenses, the upper lens being furnished with a scre\» motion to focus the slit. A side slit, capable of...the same field with that obtained from the object on tht stage. A is a brass tube, carrying the compound direct vision prism, p, a milled head, with screw...
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Discoveries and Inventions of the Nineteenth Century

Robert Routledge - 1893 - 732 pages
...consists of several parts. The prism is contained in a small tube, which can be removed at pleasure ; below the prism is an achromatic eye-piece, having...spectrum in the same field with that obtained from :he object on the stage. A is a brass tube carrying the compound directvision prism, and has a sliding...
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