書誌事項
- タイトル別名
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- On the Solution of the Azimuth of the Celestial Bobies by the Construction utilizing the Stereographic Projection
- 極射投影法利用による天体方位角の作図解法について
- ゴクシャ トウエイホウ リヨウ ニ ヨル テンタイ ホウイカク ノ サク ズカイホウ ニ ツイテ
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抄録
Among many ways of projecting a spherical figure on a plane surface at equal angles, the simplest one is the stereographic projection. By utilizing this projection, a spherical circle is directly projected as a circle on a plane surface and specifically the great circles passing through the projecting point are projected as straight lines, and there are no angular distortions between the spherical figures and the plane figures thus projected. By availing these characteristics, the spherical constructions can be made on a plane surface, and thus, we endeavoured to find a simple way of solving the astronomical triangles by means of the geometrical construction using rulers and a drawing compass in a short time instead of doing the complicated navigational calculations hitherto applied. As the result we have now obtained a successful plan with regard to the azimuth diagram. (refer to Fig.2 on this paper)
収録刊行物
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- 日本航海学会誌
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日本航海学会誌 20 (0), 77-82, 1959
公益社団法人 日本航海学会
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詳細情報 詳細情報について
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- CRID
- 1390282681071633152
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- NII論文ID
- 110006445695
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- NII書誌ID
- AN00188863
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- ISSN
- 24330116
- 04666607
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- NDL書誌ID
- 9157544
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可