蜡烛熄灭顺序及原因探索

Exploration on the order and reason of candle extinguishment under different conditions

针对苏科版物理教材上"哪支蜡烛先灭"问题,在无液封、用水封和用油封3种条件下,分别观测并记录了小、中、大及球形玻璃罩内几种不同长度蜡烛熄灭的先后顺序,并由此分析了影响蜡烛熄灭顺序的原因.在相同密封程度下,蜡烛的熄灭顺序不仅跟玻璃罩的大小有关,还与形状有关;形状不同比大小不同造成的差异更大;在液封条件下,较小的玻璃罩内的蜡烛按照由高到低的顺序熄灭,较大的玻璃罩内中较矮的蜡烛容易熄灭,且密封性越好效果越明显;底层蜡烛受到密封程度的影响更大.

Aiming at the question of which candle extinguishes first, a series of experiments were designed under conditions of no seal, water seal and oil seal. The extinguishment order of candles with different lengthes in diffirent glass covers was recorded. From the experiments, we could draw these conclusions： firstly, the extinguisment order of the candles was related not only to the size, but also to the shape of the glass covers. The difference caused by the shape of the glass covers was bigger than that caused by the size. Secondly, the order of extinguishment of the candies was from higher ones to lower ones in smaller glass covers, however, in bigger glass covers, the lower candles were more easy to extinguish. Lastly, the bottom candle was easily influenced by the seal condition.