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An additional normally utilized optical area may be the facet of the cylinder. These surfaces have power only in the meridian perpendicular towards the cylinder axis. Cylindrical lenses are consequently utilized where ever it is ideal to differ the magnification from just one meridian to a perpendicular meridian. Structures manufactured https://johnathandaxtn.like-blogs.com/29754091/the-2-minute-rule-for-intercom-system

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