Modern microscopy; a handbook for beginners and students (1912)
Cross, M. I, Cole, Martin J · Chicago, Chicago Medical Book Co. · leaf 91
performance was not so good, and in order to im-prove it we should have to make the body longer. This differenceof cover-glass thickness, with a good J-inch objective, wouldnecessitate a 10-inch body. On the other hand, if the cover were001 inch thick, the length of the body would have to be… … Fig. 25.—CorrectionCollar (Zeiss). OPTICAL CONSTRUCTION 71 and the finer the quality of the objective the more sensitivewould it be to cover-glass thickness. This system of correctingby draw-tube, however, has one drawback, and that is, that thepower is varied in correcting, and, of course, the…
Microscopy
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