Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 485
nd beam of hght from any object whose spectrum itis desired to compare with that of the object placed on the stage of themicroscope. This second beam of light strikes against a very small prismsuitably placed inside the apparatus, and is reflected up through the com-pound prism, forming a spectrum… … foUINQS. Fig. 224.—The Sorhy-Browning Micro-Spectroscope. B, a milled head, with screw motion to finally adjust the focus of theachromatic eye-lens. C,milled head, with screw motion to open or shut the slit vertically.Another screw, H, at right angles to C, regulates the slit horizontally.…
Inventions
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