【摘要】 提出了一种测量光透明液体折射率的方法。这种测量方法基于凸透镜成像。首先,在光学导轨上依次放置白炽灯、物屏、凸透镜、玻璃容器,并调节等高共轴,再调节凸透镜使物屏成缩小的实像。接着,利用读数显微镜确定缩小像的位置,并测量容器装待测液体前后两次成缩小像位置的间距。然后,利用游标卡尺测量容器内部沿凸透镜光轴方向的尺寸。最后,根据容器的尺寸与两次成像位置的间距计算得到液体的折射率。这种测量方法准确、快速,而且操作简单、方便。更多还原

【Abstract】 In this paper, a method for measuring the refractive index of transparent liquid is presented. This method is based on convex lens imaging. Firstly, the filament lamp, object screen, convex lens and glass container are placed on an optical slide-way sequentially and adjusted to equal high common axis. A reduced image of the object screen is obtained by adjusting the convex lens. Secondly, the position of the reduced image is determined by a reading microscope, and the distance between the two positions of the reduced images, which are obtained respectively before and after the container is injected into a liquid, is obtained by the reading microscope. Thirdly, the size of the inside of the container along the optical axis of convex lens is measured by a vernier caliper. At last, the refractive index of the liquid is calculated according to the size of the container and the distance between the two reduced images. This method can obtain the refractive index of transparent liquid quickly and accurately, and is simple and convenient to operate.更多还原