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12 September 2011
- 07:0107:01, 12 September 2011 diff hist +62 Light and Telescopes No edit summary
- 06:5906:59, 12 September 2011 diff hist −40 Light and Telescopes →Some Properties of your Eyes
- 06:5706:57, 12 September 2011 diff hist +3 Light and Telescopes →Telescopes
- 06:5606:56, 12 September 2011 diff hist 0 N File:Airy-pattern.png No edit summary current
- 06:5606:56, 12 September 2011 diff hist −1 Light and Telescopes →Telescopes
- 06:5506:55, 12 September 2011 diff hist +2,047 Light and Telescopes →Telescopes
- 06:2306:23, 12 September 2011 diff hist +269 Light and Telescopes →Telescopes
- 06:2106:21, 12 September 2011 diff hist −252 Light and Telescopes →Experimenting with a Lens
- 06:1806:18, 12 September 2011 diff hist +693 Light and Telescopes →Telescopes
- 06:1106:11, 12 September 2011 diff hist +296 Light and Telescopes No edit summary
- 06:0206:02, 12 September 2011 diff hist 0 N File:Telescope optics.jpg No edit summary current
- 06:0206:02, 12 September 2011 diff hist 0 N File:Spoke sm.jpg No edit summary current
- 06:0106:01, 12 September 2011 diff hist 0 N File:Resolution sm.jpg No edit summary current
- 06:0106:01, 12 September 2011 diff hist 0 N File:Eye optics.jpg No edit summary current
- 06:0106:01, 12 September 2011 diff hist 0 N File:Cross and spot.jpg No edit summary current
- 06:0006:00, 12 September 2011 diff hist +35 Light and Telescopes No edit summary
- 05:5705:57, 12 September 2011 diff hist +18,534 N Light and Telescopes Created page with " == Introduction == Until photography was developed at the beginning of this century, the eye was an astronomer’s primary instrument. With it we discovered the Sun, the large..."
- 04:2104:21, 12 September 2011 diff hist +76 Elementary Astronomy Laboratory Activities No edit summary
- 04:1804:18, 12 September 2011 diff hist +31 Our Dynamic Sun No edit summary
- 04:1604:16, 12 September 2011 diff hist +7 Our Dynamic Sun No edit summary