| 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,... | |
| 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... | |
| 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... | |
| sir Henry Enfield Roscoe - 1869 - 396 pages
...having an adjustable slit between the two lenses ; the upper lens being Fio. 47. furnished with a screw motion to focus the slit. A side slit capable of adjustment...the same field with that obtained from the object on the stage. a is a brass tube carrying the compound direct-vision prism. N b, a milled head, with screw... | |
| Henry Enfield Roscoe - 1870 - 514 pages
...eyepiece, 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...the same field with that obtained from the object on the stage. a is a brass tube carrying the compound direct-vision prism. 6, a milled head, with screw... | |
| John Henry Pepper - 1869 - 722 pages
...conveniently examined, and accurately investigated, by means of Sorby and Browning's new Microspectroscope." slit, capable of adjustment, admits, when required,...the same field with that obtained from the object on the stage A is a brass tube carrying the compound direct-vision prism. B is a milled head, with screw... | |
| Henry Enfield Roscoe - 1873 - 542 pages
...eyepiece, 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...the same field with that obtained from the object on the stage. a is a brass tube carrying the compound direct-vision prism. b, a milled head, with screw... | |
| 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... | |
| John Henry Pepper - 1877 - 764 pages
...conveniently examined, and accurately investigated, by means of Sorby and Browning's new Microspectroscope." slit, capable of adjustment, admits, when required,...the same field with that obtained from the object on the stage A is a brass tube carrying the compound direct-vision prism. B is a milled head, with screw... | |
| John Browning (F.R.A.S.) - 1878 - 80 pages
...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...the same 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,... | |
| |