玻璃杯是生活中常见的用品,利用它在家里也可以做很多物理小实验.现举例如下.一、凸透镜实验器材:玻璃杯、水方法:在玻璃杯中倒入适量的水,透过水杯看对面的手指,发现手指变得又粗又大.原理:盛水的玻璃杯相当于一个凸透镜,当物体放在焦距之内时,成正立放大的虚像.二、发声体振 Glass is a common item in daily life. It can also be used in the home to do a lot of physical experiments. The examples are as follows. 1. Convex lens test equipment: glass, water method: Pour appropriate amount of water into the glass, through the cup Look at the opposite finger and find that the finger becomes thicker and bigger. Principle: A glass filled with water is equivalent to a convex lens. When the object is placed within the focal length, it becomes an upright enlarged virtual image.