A positive film is displayed for a large audience in classrooms and conference rooms. The film sizes include 35 mm, 4 x 4 cm, 6 x 6 cm, and 6 x 7 cm, and are mounted on a glass plate or a paper frame. Long-roll slides are 35 mm film itself, and are used while still wound on a reel. Projectors used to project slides were called magic lanterns in the past, but today they are called slide projectors, and come in a wide variety, from simple small models to high-end models with automatic frame advance and audio synchronization. Projectors that can be remote-controlled to advance the frames, adjust the focus, and link with a tape recorder allow teachers and instructors to use both the screen and the blackboard for more effective explanations. Among audiovisual teaching materials, slides are widely used, particularly in social education facilities such as audiovisual centers and libraries, as well as in school education and home education. However, with the spread of digital cameras capable of high-resolution photography, personal computers, and large projectors, the use of slides, which cannot be used without a blackout curtain, is gradually being pushed aside. Furthermore, with the improvement in the quality of computer software for presentations, their actual use is increasing, and care should be taken when referring to "slides," which can also mean "one screen" of such software. [Shinohara Fuyoji] "Audio-Visual Equipment Guidebook, various editions published by the Japan Audio-Visual Educational Aids Association" ▽ "Multimedia Production Guide" by Toshiharu Nishizawa (1991, Gyosei) [Reference] | |©Takashi Aoki Basic structure of a slide projector (35 mm format) ©Takashi Aoki The basic structure of a slide projector (6 × 7 cm slides)… Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
教室や会議室などで、多人数を対象としてディスプレーされるポジフィルム。フィルムの大きさは35ミリ判、4×4センチ判、6×6センチ判、6×7センチ判などがあり、ガラス板または紙枠にマウントされている。長巻きスライドといわれるものは35ミリフィルムそのもので、巻軸に巻き込んだまま使用される。 スライドを映写する映写機は、古くは幻灯機といわれたが、現在はスライド映写機とよばれ、簡便な小型機から、自動こま送り・音声同調装置をもった高級機まで種類が多い。リモート・コントロールによって、こま送りや焦点調節、テープレコーダーとの連動が可能な映写機を用いると、教師や指導者はスクリーンと黒板を併用し、より効果的な説明に用いることができる。 視聴覚教材のなかでは、とくに視聴覚センター・ライブラリーをはじめとする社会教育施設、学校教育、家庭教育の場で、スライドの利用度は高い。しかし、高密度の撮影が可能なデジタルカメラと、パーソナルコンピュータおよび大型プロジェクターの普及に伴い、少しずつではあるが、暗幕をしなければ使えないスライドの活用が隅に押しやられている傾向もある。なお、プレゼンテーション用パソコンソフトの質が向上したことで実際の利用も増え、「スライド」といった場合にはそうしたソフトの「一画面」をさす意味にも使われるので注意が必要である。 [篠原文陽児] 『日本視聴覚教具連合会編・刊『視聴覚機器ガイドブック』各年版』▽『西沢利治著『マルチメディア・プロダクション・ガイド』(1991・ぎょうせい)』 [参照項目] | |©青木 隆"> スライド映写機の基本構造(35ミリ判) ©青木 隆"> スライド映写機の基本構造(6×7センチ… 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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