狂丸研究所，每天涨点新知识

最近天气实在是热得要命，出门在外空调太大拿不动，风扇小巧但要占另一只手，走在外头又变成了一种酷刑。

但最近，狂丸在网上看到有人用手机喇叭成功吹灭了一根蜡烛，非常神奇。

这要是真的，以后夏天出门可就太方便了，一边玩手机一边吹风，舒服。

经过一番搜索，原来，能让手机吹灭蜡烛的是一款叫做Blower（吹风机）的app，图标就是一个风扇和蜡烛，一看就是老blower了。

打开之后能看到界面非常的简单：像模像样的仪表盘搭配写着on/off的开关。

只要点击它，下面的轮盘就会开始加速旋转，发出临场感十足的嗡嗡声。

蜡烛也很配合，应声而熄。

如果搭配上另一个手机……这孩子，或许能拿来变魔术？.gif

除了吹蜡烛，这东西还可以当成一个迷你型号的、专门吹落叶的机器来用。

桌上的橡皮屑再也不会乱跑，都吹成堆儿一起清理掉。

反向改装一下，手机很可能就变成一个吸尘器了。

但众所周知，手机不是等等党梦里的那块原价显卡，一般里面是没有风扇的。

那这吹蜡烛的风，到底是从哪里来的呢？

还记得轮盘启动时手机发出的拟真嗡嗡声吗？我们都知道，声音由振动产生，但它本身是不能推动空气形成风的。

空气中的粒子只会像下图中显示的那样，在某个范围内波动，最终还会回到原本的位置。

这款app便是通过控制手机驱动扬声器，从而带动扬声器处的空气波动，从小孔附近一进一出形成力扑灭蜡烛。

app启动时将扬声器靠近火苗，就可以清楚地看到部分火焰呈现一个被吸入的趋势。

但虽然吸入和吐出时空气的量是相同的，可蜡烛并不会在空气被吸入时被吸力熄灭，因为空气被吸入时是来自吸取源的各个方向，大家没有心往一处想，拧成一股绳，没啥力度。

所以只有被喷出时比较集中，这才能保证蜡烛被熄灭。

视频中的老哥还用吸尘器和棉球做了个实验来验证这一点：棉球放在进风处纹丝不动。

而在出风口处，一下子就被吹跑了。

自此，既然掌握了声音才是这个app的神奇之处，那么如果找对相应震动频率的声音，其实不用这个app也能达到吹灭蜡烛的效果。

同样应用声音方面原理的还有那个号称手机进水神器的软件Sonic Ⓥ。

打开之后是这个样子的，只要按一下中间那个水滴按钮，调大音量，就能排出部分水分。

调到某些频率时，手指贴近扬声器真的能感觉到有气流吹拂。

确实有网友反应好用，把濒临溺死的手机抢救了回来。

不过，要是当场开不开机，还是拿去手机店修吧……

同理，那些号称有着给手机「物理清灰」能力的app和视频，其实都是用不同频率的声音带动空气来达到所谓的清灰目的。

至于清理能力是否真的有效，那就说不好了。

目前，那款叫做Blower的app在苹果商店售价12块人民币，感兴趣的朋友可以买来试试，不过要是吹蜡烛的话，我干嘛不用嘴呢？

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彭宏悦4218蜡烛为什么能在水里燃烧 -
白荆堂17518507259 ______ 只要开始时那个蜡烛头高于水面就可以了 蜡烛燃烧后会形成一层膜... 因为水的温度很低故蜡烛最外层贴水的腊不会被燃尽会形成一个蜡筒,火焰会在里面燃烧,看上去就像在水里烧

彭宏悦4218为什么水底下能点灯? -
白荆堂17518507259 ______ 因为蜡烛燃烧时蜡就化了,化了以后他就保护住了火,火不接触水,自然就不会灭拉

彭宏悦4218蜡烛竟然能在水中燃烧,到底怎么回事
白荆堂17518507259 ______ 因为蜡烛在燃烧过程中融化的蜡遇到水之后会迅速变成固体,然后迅速冻结在火焰四周使蜡烛能够一直燃烧. 相关实验:把盘子放到桌上,盘内装入少量水.将纸点燃并迅速塞入玻璃杯内,再马上将杯口向下倒扣在盘中.随着火灭烟生,杯子像一个干渴得冒烟的喉咙,把盘内的水 “喝”得一干二净,而且进入杯内的水不会再流出来.如果把一枚硬币事先放入盘内的水底,那么,此时你可以不湿手指地将它取出来.当然,扣杯子时注意杯口不能把这个硬币罩住.注意,放入盘内的水不能太多,否则这个杯子可能喝不完盘内的水.原理:蜡烛燃烧消耗氧气,使得玻璃杯内的压强减小,小于外面的大气压,所以水会被大气压压到玻璃杯里面.

彭宏悦4218把点燃的蜡烛放下水火为什么不灭
白荆堂17518507259 ______ 因为没有完全丢进去

彭宏悦4218为什么我的蜡烛在水中会熄灭 -
白荆堂17518507259 ______ 因为水使蜡烛与空气隔绝.展开全部 水中燃烧的蜡烛 准备材料:一盒火柴、一个玻璃杯、一支蜡烛、一些水 点燃蜡烛,用同样的方法把蜡烛固定在玻璃杯底中央. 然后小心翼翼地在水杯中注水至距蜡烛上端1cm处. 进行观察,我发现当蜡烛燃烧到接近水面时,蜡烛并没有熄灭. 继续观察,我发现在蜡烛的燃烧槽周围形成了一个薄薄的圆柱状的墙. 蜡烛的灯芯已经到了水面下. 蜡烛真的能在水中燃烧!太神奇了.这是为什么呢? 原来是因为烛液是热的,水是凉的,它们相遇后就在蜡 烛周围形成一个圆的保护层(就是我们看到的像圆柱一样的墙).阻止水进入蜡槽到灯芯,蜡烛就不会熄灭,我们就会 看到蜡烛在水中燃烧.

彭宏悦4218为什么把一个蜡烛放在脸盆里,再在脸盆里倒水(不把蜡烛淹没),点燃蜡烛.问题:为什么火能点到水里? -
白荆堂17518507259 ______ 燃烧需要达到两个条件:温度和着火点,由于蜡烛周围充满水,蜡烛表面(即蜡烛壁)不能达到燃烧温度,所以蜡烛表面无法燃烧,火就会一直点到水里

彭宏悦4218把水倒入融化的蜡烛为什么点然
白荆堂17518507259 ______ 不会,因为:当蜡烛燃烧到接近水面的时候,水会浸入蜡烛,导致 1.蜡油降温凝固,无法向蜡烛芯继续输送蜡油,导致熄灭, 2.蜡烛芯的蜡油因降温达不到燃点也无法继续燃烧.

彭宏悦4218点燃.为什么火不会灭,蜡烛变成漏斗形?把蜡烛头放在瓶里,把水倒到
白荆堂17518507259 ______ 这好像没有什么神奇的地方吧 水平面以上有氧气,水中的蜡烛的燃烧利用不了.这时火焰中心处永远低于蜡烛顶端四周(注意观察都能看到),它燃烧利用的也就是中心处的氧气了,形成的漏斗壁就如一个氧气的容器,供其燃烧

彭宏悦4218为什么蜡烛可以在水中燃烧? -
白荆堂17518507259 ______ 水火是一对冤家,怎么会互相交融呢?做完这个游戏你就明白了. 工具准备:一支蜡烛,一盒火柴,一个大玻璃瓶,水. 游戏过程: 1将蜡烛固定在大玻璃瓶中; 2将蜡烛点燃; 3在大玻璃瓶中注入适量的水(注意不要碰到火焰); 4过一会儿发现,尽管水面上的蜡烛已经渐渐燃尽,但是蜡烛的火焰却没有熄灭,仍然在水中继续燃烧. 游戏中的科学: 蜡烛燃烧形成的蜡液经水冷却后构成了一层很薄的外壁,这层外壁将水和火焰隔离开来,这样火焰遇水时就不会熄灭,而是继续燃烧.因此,我们就能看到水火交融的奇景了.