盖·吕薩克定律演示实验的改进

高中物理课本第二册第110页图99,是关于盖·吕萨克定律的演示装置图(如图1所示)。这个实验实际做时存在一些困难,我在实践中作了一些改进,现将改进后的装置(如图2所示)和做法介绍如下: (1)将水平玻管两头作钝角弯曲,当中较长一段,仍必须保持水平,在水平玻管部分附有刻度尺(最好用黑色尺,尺上划白线条,这样观     

Study on 55°, 905 nm, high reflectivity and visible range beam splitter in cemented cube

This is a difficult kind of beam splitter in a cemented cube. The specification is： under angle of incidence （AOI）= 55°, the reflectivity at 905 nm is no less than 85%, and in the visible range the average trans- mittance is 40±2%, and T＋R≥90%. Because the AOI is 55°, it needs to use a metal coating material to make sure the film be designed. The film has some problems on durability, and its optical performance is very hard to be controlled. We get some experiments and evaporation technique. Final results show that temperature, and environmental durability. after changing its design including coating material the beam splitter has good properties, and passed     

盖·吕薩克定律演示实验的改进

高中物理课本第二册第110页图99,是关于盖·吕薩克定律的演示装置图(如图1所示)。这个实验实际做时存在一些困难,我在实践中     

用氧化铟透明导电膜制备防霜镜

<正> 一、引言目前,在光学仪器中已有不少防霜措施,其中以电加热法为好。已得到广泛应用的有电热丝加热法和铬等金属膜加热法。但是,这些方法的缺点是加热不均匀和影响视场等。透明导电膜加热法可以克服上述缺点,是一种较为理想的防霜措施。用得比较普遍的透明导电膜有二氧化锡膜和金膜。前者,通常是用化学高温淀积法涂敷的,即用四氯化锡的乙醇溶液喷涂或熏蒸至已预热到接近软化点的玻璃零件