. The microscope; an introduction to microscopic methods and to histology. Microscopes. Fig. 141 * Normal Spectrum Showing the Sensitiveness oe Ortho- chromatic OR IsocHROMATic. Plates. (Aftel: Mees; magnification as in fig. 139). These plates have practically the same sensitiveness as the ordinary plates except that the sensitiveness is continued through the green and yellow. (Compare fig. 139, 140 and 142.) contrast effects it was necessary to devise means for blocking out special parts of the spectrum (§ 368). These selecting media are known as Color Screens or Ray
. The microscope; an introduction to microscopic methods and to histology. Microscopes. Fig. 141 * Normal Spectrum Showing the Sensitiveness oe Ortho- chromatic OR IsocHROMATic. Plates. (Aftel: Mees; magnification as in fig. 139). These plates have practically the same sensitiveness as the ordinary plates except that the sensitiveness is continued through the green and yellow. (Compare fig. 139, 140 and 142.) contrast effects it was necessary to devise means for blocking out special parts of the spectrum (§ 368). These selecting media are known as Color Screens or Ray Filters. Color Screens or Ray Filters § 366. Color screens or ray filters. — These are transparent, colored bodies which select the wave lengths of Ught which they transmit and absorb the other waves, or they diminish more or less some of. the wave lengths and transmit the others with very slight loss. The color of such a screen to the eye will be determined by the. ,1 (x Fig. 142. Normal Spectrum Showing the Sensitiveness op Panchro- matic Plates. (After Mees; magnification as in fig. 139). Panchromatic plates have the maximum sensitiveness still in the violet-blue, but it is extended to include the red. (Compare fig. 139-141). light which it transmits in the greatest quantity. For example, if the violet-blue light is absorbed- the remaining light will appear. 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. The Comstock publishing company
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