Last week, foreign social networking sites on the Reddit didn′t break a single arrow pictures triggered netizens ′ discussions of the balloon. Canada Brock benefit event of the archery Club, an 11-year-olds in the room shoots about 10 meters from the ordinary balloons, but it did not explode, what the hell is this?

While the balloons are being analyzed, but conclusions can be obtained through a similar test. There had been checked through the balloon without bursting balloons with barbecue.

First of all, we need to understand why the balloon burst. When you blow a balloon when its internal air pressure increase, rubber is stretched by the pressure becomes very thin. This time, if there are sharp objects tied balloons, rubber surface tension will transfer to the hole′s edge, the tension is very large, it makes it impossible for the balloon to maintain the tension, rubber and therefore severe tear, ran away from air inside the balloon.

However, the rubber will have a different degree of stretching. If you look at it, you will find balloons at the top and there will be some darker areas near the bottom, where the rubber is more relaxed, if the arrow hit the area, the balloon won′t burst.

Worth noting is that although balloons did not explode, but the air in the balloon will slowly leak away gradually, if the arrow remains in original condition, the balloon will remain in the original sealed State.

上个星期，国外社交网站Reddit上一张关于箭头都插不破的气球的图片引发了网友的讨论。在加拿大布洛克利射箭俱乐部的一次活动上，一名11岁的孩子在室内大约10米的距离用箭射向了普通的气球，但是它并没有炸开，这到底是为什么呢?

虽然无法对那个气球进行具体分析，但是我们可以通过一个类似的实验来获得结论。此前有人用烤肉签穿过气球而不让气球爆裂。

首先，我们需要了解气球为什么会炸开。当你吹气球的时候，其内部的空气压力会增加，橡胶会因为这个压力而被拉伸，变得很薄。这个时候，如果有尖锐物扎气球的话，橡胶表面的张力就会转移到破洞边，这个张力非常大，它使得气球无法保持原来的拉伸状态，橡胶也就因此剧烈撕裂，空气也从气球内部跑掉。

但是，橡胶上会出现不同程度的拉伸。如果你注意看的话，你会发现气球的顶部和底部附近会出现一些颜色较深的区域，那里的橡胶更松弛一些，如果箭头射中的是这些区域的话，气球就不会爆裂开来。

需要提到的是，虽然气球没有炸开，但是气球中的空气还是会逐渐慢慢漏掉，而如果箭头一直保持原来的状态的话，气球还会保持原来的密封状态。