The microscope; an introduction to the microscopic methods and to histology (1911)
Gage, Simon Henry, 1851-1944 · [Ithaca, N.Y.] The Comstock Publishing Company · leaf 144
MAGNIFICATION AND MICROMETRY 125 triangle, of which it forms a base. The distance of 250 millimetershas been chosen on the supposition that it is the distance of mostdistinct vision for the normal human eye. Demonstrate the difference in magnification due to the distanceat which the image is… … Fig. 114. Sectionalview of the Abbe Cam-era Lucida to show thatin measuring the stand-ard distance of 250 mill-imcters, one must meas-ure along the axis fromthe point P, at the leftoftheprism, to the mir-ror, and from the mir-ror to the drawing sur-face. For a full ex-planation of this…
Microscopy
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