File:Wulff net central angle 3.jpg
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English: Measuring the central angle between two points P1 and P2 on a stereographic projection using the Wulff net: case where both points don't belong to the same hemisphere. A transparent sheet has been tacked in the middle of a Wulff net and the points are drawned on the transparent sheet. To read the central angle, the transparent sheet has to be rotated until both points lie on meridians that are symmetrical with respect to the N'S' direction (see Wulff net central angle 4.jpg). |
| Date | |
| Source | Own work |
| Author | Perditax |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:01, 20 January 2012 | | 1,500 × 1,100 (1.19 MB) | Perditax (talk | contribs) | Photo reprise pour couleurs |
| 14:47, 20 January 2012 |  | 1,500 × 1,100 (1.1 MB) | Perditax (talk | contribs) | {{Information |Description ={{en|1=Measuring the central angle between two points P1 and P2 on a stereographic projection using the Wulff net. A transparent sheet has been tacked in the middle of a Wulff net and the points are drawned on the transparen |
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