File:Focal length.gif

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Parallel beam of light converges at focal point of lens

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Date/TimeThumbnailDimensionsUserComment
current15:02, 12 December 2008Thumbnail for version as of 15:02, 12 December 2008960 × 720 (5 KB)EricN (Talk | contribs) (A convex lens converges parallel beams of light to the focal point.)
14:47, 12 December 2008Thumbnail for version as of 14:47, 12 December 2008960 × 720 (5 KB)EricN (Talk | contribs) (Parallel beam of light converges at focal point of lens)

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