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一、引言 人们认识和研究客观世界主要靠人的眼睛。人眼靠视神经和大脑中枢联系能够实时处理眼见的图象。但眼睛对快速过程的观察能力受“视觉暂留”的局限,时间分辨能力大约只有10~(-1)秒。原为每秒16~24幅的电影(或动画片),人们不会看出图象是在断续变化的。因此人们不能直接通过眼睛的观察,去研究时间分辨小于10~(-1)秒的快速过程。人类对客观世界中许多快速过程的认识例如爆轰、
I. Introduction People recognize and study the objective world mainly by human eyes. Human eyes depend on the optic nerve and the central nervous system to be able to deal with real-time vision of the image. However, the ability of the eyes to observe the fast process is limited by “persistence of vision”, and the time resolution is only about 10-1 seconds. Formerly 16 to 24 films per second (or animation), people will not see the image is intermittent changes. Therefore, people can not directly observe the rapid observation of time less than 10-1 seconds. Humankind’s awareness of many of the fast processes in the objective world, such as detonation,