File:Optical table.png
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:18, 30 April 2021 | | 957 × 719 (1,013 KB) | WenYi (talk | contribs) | |
| 21:00, 29 April 2021 |  | 959 × 594 (892 KB) | WenYi (talk | contribs) |
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