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Unformatted text preview: unclear. 5) By moving the screen closer to the lens, we were able to find a new position where the image was most focused. This can also be observed in the diagram above. 6) By using a mask that had the inner radius cut out, we found that the image became very clear and “filtered.” 7) We measured Σ LC = 46.5 cm and f = 48.5 cm for the planar side and The convex side measured Σ LC = 47.25 cm and f = 47.0 cm . 8) As the lens is “stopped down,” the position of Σ LC moved farther and farther from the lens. 9) The rays that entered from the “normal” or the “flat” side of the lens had less spherical aberration than the rays that entered from the curved side. 10) Where z = 2.5 cm and Δ = 0.319 cm Anil Kanungo (ASK 358) Partners: Ramon Salazar, James Bloom PHY 115L – 60675 October 13, 2008 Page 2 of 2 11)...
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- Fall '08
- 2.5 cm, Anil Kanungo, Ramon Salazar, 0.319 cm, 46.5 cm