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第三讲 高速电影术和针定位间歇式相机 高速电影摄影机是一种记录记时仪,它对物理学家来说,如同显微镜对生物学家,望远镜对天文学家,示波器对电子学工程师一样,是一个无价之宝。高速电影术,实际上已被广泛地用于每个科技和工程技术领域,都取得了不同程度的成功。 应用高速电影术来研究运动是根据这样一种基本原理,即,以高的重复频率拍摄图象,却以较低的频率放映它,用这种方法使图象的运动速度变慢,变慢的速度正比于拍摄和放映速度之比。在用高速电影相机研究运动问题方面,需要回答的第一个问题是:
The third high-speed movie and needle positioning intermittent camera High-speed movie camera is a recording chronograph that physicists, it is like a microscope for biologists, telescopes for astronomers, oscilloscopes, electronics engineers, Is a priceless treasure. High-speed cinematography, in fact, has been widely used in every area of technology and engineering, with varying degrees of success. The use of high-speed cinematography to study motion is based on the basic principle that images are taken at a high repetition rate but are shown at a lower frequency, which slows down and slows the motion of the image The speed is proportional to the shooting and screening speed ratio. The first question that needs to be answered when studying motion problems with high-speed movie cameras is: