File:Focal length.gif
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Parallel beam of light converges at focal point of lens
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:02, 12 December 2008 | | 960 × 720 (5 KB) | EricN (talk | contribs) | A convex lens converges parallel beams of light to the focal point. |
| 14:47, 12 December 2008 |  | 960 × 720 (5 KB) | EricN (talk | contribs) | Parallel beam of light converges at focal point of lens |
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