Laurence, Lionel · London, School of Optics · leaf 148
e D E appears as D E, the deviation of theselines being towards the axis of the lens, or towards the apices of the virtualprisms. In Fig. 143 let the lens be a + sph.-cyl., whose axis A X is at 45°.Let B be a point situated between the Ver. and the axis. There is, at thispoint, the effect 0 B of a…
Optics
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