. The elements of physiological physics: an outline of the elementary facts, principles, and methods of physics; and their applications in physiology. Biophysics. Here the change of eye-piece is all that is necessary to convert a monocular into a binocular, or to reverse the process. In all forms of the stereoscopic microscope, however, the loss of light, owing to so many reflecting surfaces, is so considerable, that for ordinary practical use the monocular microscope is the most serviceable. THE DRAWING OF MICRO- SCOPIC OBJECTS. Various forms of optical Fig> 's Bino apparatus
. The elements of physiological physics: an outline of the elementary facts, principles, and methods of physics; and their applications in physiology. Biophysics. Here the change of eye-piece is all that is necessary to convert a monocular into a binocular, or to reverse the process. In all forms of the stereoscopic microscope, however, the loss of light, owing to so many reflecting surfaces, is so considerable, that for ordinary practical use the monocular microscope is the most serviceable. THE DRAWING OF MICRO- SCOPIC OBJECTS. Various forms of optical Fig> 's Bino apparatus have been devised for cuiar Eye-piece, fitting to a microscope, in order to permit of a faithful drawing being taken of the magnified image. Wollaston's camera liirida, devised in 1807, is one form very generally employed. It con- sists of a prism of glass set in a brass case fixed to a short tube which is slipped on the eye-piece instead of its eye-glass. The body of the microscope must be placed horizontally. Fig. 167 represents the path of the rays. Rays of light oo, passing up the microscope tube, fall upon the perpendicular face of the prism which is next to the tube. They meet this face at right Fig. 167.—Camera Lucida. angles, and pass unaffected into the prism, to fall on the lower internal face, where, owing to the angle, they are totally reflected in an upward Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original M'Gregor-Robertson, J. (Joseph), 1858-1925. Philadelphia, H. C. Lea's son & co.
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1884
