. The microscope : an introduction to microscopic methods and to histology. Microscopes. The Microscope in Section with the Images : i, 2, 3, Beams of light to the mirror; C Image distance, i. e.; from eye-point, E-P, to virtual image (O4); CD Condenser diaphragm; EP Eye-point of ocular; F] Upper focal plane of the objective; F2 I^ower focal plane of the eye-piece ; I, Mechanical tube-length, /.. e,: from top of draw-tube to screw for insertion of objective; 61 Object on the stage; 62 Image formed by the objective were no field lens present; O3 >Image when field lens is present; O4 Virtual
. The microscope : an introduction to microscopic methods and to histology. Microscopes. The Microscope in Section with the Images : i, 2, 3, Beams of light to the mirror; C Image distance, i. e.; from eye-point, E-P, to virtual image (O4); CD Condenser diaphragm; EP Eye-point of ocular; F] Upper focal plane of the objective; F2 I^ower focal plane of the eye-piece ; I, Mechanical tube-length, /.. e,: from top of draw-tube to screw for insertion of objective; 61 Object on the stage; 62 Image formed by the objective were no field lens present; O3 >Image when field lens is present; O4 Virtual image ; A Optical tube-length, i. e.: distance from the upper focal plane of the objective (Fi) to lower focal plane" of eye- piece 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 Gage, Simon Henry, 1851-1944. Ithaca, N. Y. : Comstock Publishing Company
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