File:Wulff net central angle 4.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. The transparent sheet has been rotated until both points P1 and P2 lie on meridians that are symmetrical with respect to the N'S' direction (see Wulff net central angle 3.jpg). The angle is measured by counting the graduation along the meridian between both points (here, 2° steps: the angle is 114°). |
| Date | |
| Source | Own work |
| Author | Perditax |
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 14:21, 20 January 2012 | | 1,500 × 1,100 (1.02 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: case where both points don't belong to the same hemisphere. A transparent sheet has been tacked in the middle |
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