WEKO3
アイテム
雷觀測用回轉寫眞機の試作
http://hdl.handle.net/2237/21500
http://hdl.handle.net/2237/21500f9dced71-390e-43e7-bfb4-9b932a42294e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
bulria_2_2_91.pdf (2.0 MB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-04-09 | |||||
| タイトル | ||||||
| タイトル | 雷觀測用回轉寫眞機の試作 | |||||
| 言語 | ja | |||||
| その他のタイトル | ||||||
| その他のタイトル | ON THE FAST BOYS' CAMERA OF ROTATING MIRROR TYPE | |||||
| 言語 | en | |||||
| 著者 |
石川, 晴治
× 石川, 晴治× 高木, 增美× ISIKAWA, Haruji× TAKAGI, Masumi |
|||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | It may bring a clue for clearing out the origin of atmospherics to study simultaneously the rapid electric field change and the flash light radiated from near-by-thunderstorms. As for the photographic study of the fine structure of lightning discharge， it is necessary to use a kind of rotating camera - Boys' camera - of appropriate features，which may be summarized as follows. It must be provided first with the sufficiently high photographic image sweeping speed of about 30-40 meters per second，secondly the wide field of vision which is nearly as wide as 100 degrees of angle，thirdly the large relative aperture lens，which enables us to photograph the low brightness portion of lightning discharge. Discussing the design of such fast Boys' camera as that，which satisfies the above conditions, we have reached to the conception of a camera system， which has been constructed from rotating polyhedral mirror and photographic camerae of Leica type，which have been arranged around the mirror. It may be said that this is a variation of Walters' camera，as he rotated the camera itself instead of our rotating mirror. By the camera system with a polyhedral mirror of twelve faces and twelve camerae of Leica type，which surround the former，we can obtain the field of vision covering the four right angles. More-over in such a case， that the obstacles arising from the presence of the blind angles between the successive visual angles，which are nearly as wide as 15 percent of the latter can be looked over， one octagonal mirror and eight camerae around it will satisfy our requirement of the continuous wide field of vision covering four right angles. As a preliminary case the camera system with a mirror of four faces and a camera has just been constructed. Although the instantaneous fields of vision of this camera of about 20 degrees of angle are inserted individually between successive blind angles of about 70 degrees of angle，but the rotation speed，which corresponds to the image speed of 40 meters per second， covers this defect，and we may be able to expect to photograph the so-called stepped leader， provided the leader exists and has the duration of the order of 10 milli-seconds. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | 名古屋大学空電研究所 | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| ISSN（print） | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0465-7756 | |||||
| 書誌情報 |
ja : 空電研究所報告 巻 2, 号 2, p. 91-98, 発行日 1952-07-20 |
|||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/21500 | |||||
| 識別子タイプ | HDL | |||||
