The microscope and its revelations . Fitting of Polarizing Prism in Smith and Becks Microscope. to the microscope; this collar may be fitted to the under sideof the stage-plate, or, where a secondary stage is provided, itmay be attached to this; in the microscope of Messrs. Smithand Beck, it screws into the lower part ih) of a tube(Pig. 41, b) that slides into the cylindrical fitting beneaththe stage (Fig. 29). The analyzer, which may be either a Nicol prism, a Tourmaline, or a crystal of Herapathite, isusually placed either in the interior of the microscope, orbetween the eye-piece and the ey
The microscope and its revelations . Fitting of Polarizing Prism in Smith and Becks Microscope. to the microscope; this collar may be fitted to the under sideof the stage-plate, or, where a secondary stage is provided, itmay be attached to this; in the microscope of Messrs. Smithand Beck, it screws into the lower part ih) of a tube(Pig. 41, b) that slides into the cylindrical fitting beneaththe stage (Fig. 29). The analyzer, which may be either a Nicol prism, a Tourmaline, or a crystal of Herapathite, isusually placed either in the interior of the microscope, orbetween the eye-piece and the eye. If it be a prism, it ismounted in a tube, which may either be screwed into thelower end of the body in the situation of the erector (Fig. 32),or may be fitted over the eye-piece in place of its ordinary cap(Fig. 42); in the former situation it has the advantage of notlimiting the field, but it stops a con-siderable proportion of the light; inthe latter, it detracts much less fromthe brightness of the image, but cutsoff a good dea
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Keywords: ., bookcentury1800, booksubjectmicroscopes, booksubjectmicroscopy
