我们来做一个小实验:在水平桌面的中央竖直放一块平板玻璃,在玻璃前放一支点燃的蜡烛,在玻璃后放一水杯,水杯中有一支未点燃的蜡烛;移动水杯,直到从玻璃前看去感觉水杯中的蜡烛在燃烧.往水杯中倒水,奇怪,水杯中的蜡烛竟然浇不灭,如图1.这是怎么回事呢? Let’s make a small experiment: Put a flat glass in the center of the horizontal tabletop, put a lit candle in front of the glass, place a glass behind the glass, and an unlit candle in the glass. Move the glass until Before looking at the glass, the candle in the glass is burning, pouring water into the glass, strangely, the candle in the glass is poured out, as shown in Figure 1. What is going on?