本文介绍利用投影仪和透明胶片在大教室前的屏幕上动态演示干涉、偏振等波动光学现象及其规律的一些方法。
Transparent film projector is used to demonstrate interference, polarization and other wave optical phenomena and laws on large screen in big lecture halls.
过去十几年来，我的技术和装备一直很简单：一次深呼吸，一台小型相机，以及一些为了拍摄海底浓厚的暗度和饱和度准备的透明胶片。
In the past dozen years my technique and equipment have stayed simple: a deep breath, a small camera, and transparency film, for its dense blacks and saturation.
过去十几年来，我的技术和装备一直很简单：一次深呼吸，一台小型相机，以及一些为了拍摄海底浓厚的暗度和饱和度准备的透明胶片。
In the past dozen years my technique and equipment have stayed simple: a deep breath, a small camera, and transparency film, for its dense blacks and saturation.
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