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一般认为,“只有在很小的范围内才能演示高分辨本领仪器的作用”。实践证明,如果利用(检查量块用的)ПИ玻璃板或者(检查螺旋测微计用的)ПМ玻璃板,在短时间内制成法卜利-白洛标准具并不特别困难。如果用500—1000瓦的ШРД石英水银灯(СВДШ)做光源,就可以在大教室里观察干涉花样。1962年在托姆斯克大学的物理研究室里制出了两个这样的标准具。仪器的玻璃板的工作面用真空蒸发法镀银。银层的厚度应该使在透光孔中(在窗口观察)透射出来的光是淡蓝色的,并且层密度不很大。如果有可能,最好镀上多层介质膜,其反射系数对λ=5461A来说约为91%。不过第一
Generally believed that “only in a very small range to demonstrate the role of high-resolution instruments.” Practice has shown that it is not particularly difficult to make Fabry-Perot etalons in a short period of time if either a glass plate (used for inspecting the block) or a glass (used for helical micrometer) is used. If 500-1000 watts ШРД quartz mercury lamp (СВДШ) as a light source, you can observe the interference pattern in the classroom. Two such etches were made in 1962 at the Physics Laboratory of the University of Tomsk. The face of the instrument’s glass plate is vacuum-evaporated. The thickness of the silver layer should be such that light transmitted through the light-transmitting holes (viewed in the window) is light blue and the layer density is not very high. If possible, a multilayer dielectric film is preferred, with a reflection coefficient of about 91% for λ = 5461A. But first