我根据光的折射原理,设计了一个《测定透明液体折射率》的方法。用一只杯子(可用茶缸、罐头瓶)和胶片一张。胶片的制作是这样的:用一旧的饮料瓶(高橙瓶为宜)去掉两端,将中间的圆筒剪开,用熨斗将其烫平后,剪成下端是一矩形,上端为半圆形的胶片如图1所示。矩形的宽AB比杯子的直径稍小一点,长AD比杯子的深浅稍小一点(或一样),用针尖(细铅笔)连接AB作过半圆心o的直线,而后过o点用细针穿两根细线,一根绕过AD边 Based on the principle of refraction of light, I designed a method for measuring the refractive index of transparent liquids. Use a cup (available tea jar, canned bottle) and a piece of film. The production of the film is as follows: use an old beverage bottle (high orange bottle is appropriate) to remove the two ends, cut the middle cylinder, iron it flat, cut into the lower end is a rectangle, the upper half Round film is shown in Figure 1. The width of the rectangle is slightly smaller than the diameter of the cup. The long AD is slightly smaller (or the same) than the depth of the cup. Use the tip (fine pencil) to connect AB to the semicircle o, and then pass the o. Root hairline, one bypasses the AD side