 | Henry Enfield Roscoe - 1870 - 514 páginas
...any object whose spectrum it is desired to compare with that of the object placed on the stage of the microscope. This second beam of light strikes against...the stage. a is a brass tube carrying the compound direct-vision prism. 6, a milled head, with screw motion to adjust the focus of the achromatic eye-lens.... | |
 | sir Henry Enfield Roscoe - 1869 - 396 páginas
...any object whose spectrum it is desired to compare with that of the object placed on the stage of the microscope. This second beam of light strikes against...the stage. a is a brass tube carrying the compound direct-vision prism. N b, a milled head, with screw motion to adjust the focus of the achromatic eye-leus.... | |
 | John Henry Pepper - 1869 - 722 páginas
...any object whose spectrum it is desired to compare with that of the object placed on the stage of the microscope. This second beam of light strikes against...the stage A is a brass tube carrying the compound direct-vision prism. B is a milled head, with screw motion to adjust the focus of the achromatic we-lens.... | |
 | sir Henry Enfield Roscoe - 1870 - 452 páginas
...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 motion to adjust the focus of the achromatic eye-lens. c, milled head, with screw motion to open or shut the slit vertically. Another screw at right... | |
 | Henry Enfield Roscoe - 1873 - 542 páginas
...any object whose spectrum it is desired to compare with that of the object placed on the stage of the microscope. This second beam of light strikes against...the stage. a is a brass tube carrying the compound direct-vision prism. b, a milled head, with screw motion to adjust the focus of the achromatic eye-leus.... | |
 | sir Henry Enfield Roscoe - 1873 - 550 páginas
...any object whose spectrum it is desired to compare with that of the object placed on the stage of the microscope. This second beam of light strikes against...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... | |
 | Henry Enfield Roscoe - 1873 - 552 páginas
...object on the stage. a is a brass tube carrying the compound direct>vision prism. b, a milled bead, with screw motion to adjust the focus of the achromatic eye- lens. c, milled head, with screw motion to open or shut the slit vertically. Another screw at right angles to... | |
 | John Henry Pepper - 1877 - 764 páginas
...any object whose spectrum it is desired to compare with that of the object placed on the stage of the microscope. This second beam of light strikes against...the stage A is a brass tube carrying the compound direct-vision prism. B is a milled head, with screw motion to adjust the focus of the achromatic eye-lens.... | |
 | John Browning (F.R.A.S.) - 1878 - 80 páginas
...any object whose spectrum it is desired to compare with that of the object placed on the stage of the Microscope. This second beam of light strikes against...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... | |
 | Every boy - 1881 - 932 páginas
...desired to compare with that of the object placed on the stage of the microscope. This second beam of n light strikes against a very small prism suitably...with that obtained from the object on the stage. A, the brass tube carrying the compound direct-vision prism, has a sliding arrangement for roughly focussing.... | |
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... screw motion to focus the slit. A side slit capable of adjustment admits when required a second beam of light from any object whose spectrum it is desired to compare with that of the object placed on the stage of the microscope. This second beam of... 
