论文部分内容阅读
近年来,国外盛行一种室外露天电影。人们在晴朗的日子里,采用由细小玻璃微珠制成的“白昼电影银幕”就可以观看各种影片,自放映以来很受欢迎。银幕上的这种玻璃微粒,从表面上看起来就像一种白色粉末,但在光学显微镜下观察则是粒度十分均匀的球型颗粒。直径只有头发丝一般大小,用眼睛很难分辨。这些玻璃微珠对光线有很强的反射作用,光线从哪个方面射过来都可以从原来的方向反射回去,而且亮度很大,从而使人们能够很清晰地看到银幕上的画面。
In recent years, an outdoor open-air movie has prevailed in foreign countries. On sunny days, people can watch a variety of movies using the “White Film Movie Screen” made of tiny glass beads, which has been popular since the filming. The glass particles on the screen look like a white powder on the surface, but they are spherical particles with a very uniform particle size when viewed under an optical microscope. Diameter is only the size of the hair, it is difficult to distinguish with the eyes. These glass beads have a strong reflection of light. From which aspect of the light, the light can be reflected back from the original direction, and the brightness is large, so that people can clearly see the screen on the screen.