Modern microscopy; a handbook for beginners and students (1912)
Cross, M. I, Cole, Martin J · Chicago, Chicago Medical Book Co. · leaf 103
the contact is a little closer on oneedge than on the other, then straight bands of colour will appear.Any difference of curvature between the lens and proof platebetrays itself by the appearance of rings, and if the lens surfaceis not truly spherical the rings become deformed from the truecircular… … Fig. 28.—Proof Plate and Newtons Rings. mounted on the lathe-spindle to be centred—that is, to havea smooth edge turned and ground, perfectly true with the opticalaxis of the lens. The various constituents are then cemented together andbaked for several hours, and are subsequently mounted in…
Microscopy
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