Geomag great stellated dodecahedron : 無料・フリー素材/写真
Geomag great stellated dodecahedron / Karl Horton
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | This solid is composed of twelve pentagrams.In truth, the pentagrams arms should be longer that the side of the inner pentagon by the golden ratio, which is about 1.618. This proportion is closeley approximated here with 3/4" balls at the tips and 5.8" inside.150 rods, 12 5/8" balls & 20 3/4" balls |
| 撮影日 | 2007-03-11 15:42:51 |
| 撮影者 | Karl Horton , San Francisco |
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| カメラ | Canon PowerShot SD700 IS , Canon |
| 露出 | 0.05 sec (1/20) |
| 開放F値 | f/2.8 |
| 焦点距離 | 12515.5555555556 dpi |