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doudoune sans manche canada goose Chewing gum wrappers + dry [复制链接]

1#

,http://www.daviskoreanschool.org
1 battery experiment, aluminum foil paper sparks and eventually ignited paper towel. Newspaper reporter Wang Bin photo
  paper  can make a fire, the technique does not press the body oh!" Recently, users of this "wild life necessary for the post caused the majority of users have exclaimed, users questioned. 21, the reporter bought a packet of chewing gum and different types of dry cells, the experiment found that chewing gum aluminum foil
paper and dry battery really can wipe out sparks, and then smoke, and finally burn up, the whole process of the fastest one minute.


   paper  and dry batteries can quickly fire. At the same time, the serious users, but also the entire experimental process taken photos, each photo attached to the detailed experimental procedures and instructions. Finally, it is also noted that the aluminum foil in contact with both ends of the dry cell
   paper , the best cushion
   paper , to avoid the heat produced by burning fingers. This "picture is truth" net post caused many users talk, some netizens said the move, but beware of fire. There are users worried about the danger, some netizens questioned.
  
  
    paper  will wipe out a spark, the reporter for No. 1, No. 5 and No. 7 battery, two aluminum foil bag
   paper packaging for chewing gum, scissors and
   paper towel. In accordance with the experimental steps net posts, the reporter took out the aluminum foil in the chewing gum
   paper , and aluminum foil
   paper cut into fine strips at both ends, divided into two pieces were tightly affixed to the positive and negative poles of the battery. The first test of the largest volume of 1 batteries, and aluminum foil
   repeatedly touch the paper strips, about 10 seconds to generate heat and smoke, 20 seconds, more obvious Mars smoke,http://aminex.de/index.php?site=guestbook, 1 minutes after the aluminum foil
   paper strips of fire and ignited the connection of aluminum foil
   paper
   paper towel. In the course of the experiment, the reporter felt foil
   paper with hot stamping, the battery itself no heat.
  
  
     paper  smoke, and in 30 seconds after the smoke had increased 1 minutes after the start of Mars, but not enough to ignite a tiny flame combustion
     paper towel. Different from the No. 1 battery, 5 battery itself has a hot sensation.
    
    
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用1号电池实验,铝箔纸产生火花并最终点燃纸巾。 本报记者王滨 摄
  半岛都市报8月21日讯(见习记者 姜豪 实习生 牟海涛  姜璇) “干电池+口香糖纸可以生火,技多不压身哦!”近日,网友的这篇“野外救生必备手段”的帖子引起了广大网友的惊呼,也有网友表示质疑。21日 ,记者购买了小包口香糖和不同型号的干电池,实验发现口香糖铝箔纸和干电池真的能擦出火花,然后是冒烟,最后竟然燃烧起来,整个过程最快用了一分钟。
  “如果野营时没有带火柴、打火机,这种方法取火不失为一种好办法!”近日,网友“余坤友”发帖称,外出必备一大技能,利用口香糖的铝箔纸和干电池可以快速生火。同时这位认真的网友,还将整个实验过程拍摄了照片,每张照片都附加了详细的实验步骤和说明。最后还提醒说,在接触干电池两端的铝箔纸时,最好能垫层纸,避免产生的热量烫伤手指。这个“有图有真相”的网帖引发不少网友议论,有的网友表示学了一招,但要注意山火。也有网友担心存在危险,有的网友表示质疑。
  为了调查干电池和口香糖纸会不会擦出“火花”,记者准备了1号、5号和7号电池,两包用铝箔纸包装的口香糖,剪刀和纸巾。按照网帖的实验步骤,记者取出口香糖里的铝箔纸,并将铝箔纸的两端剪成细条状,分成两块分别紧紧贴在电池的正负两极。记者首先实验体积最大的1号电池,并将铝箔纸细条进行反复触碰,大约10秒时间就产生热量并冒烟,20秒左右,冒烟增多出现明显火星,1分钟后铝箔纸细条着火燃烧,并引燃了连接铝箔纸的纸巾。在实验过程中,记者明显感受到铝箔纸有热烫感,电池本身无热感。
  随后,记者使用5号电池进行试验,10秒左右铝箔纸冒烟,并在30秒后冒烟增多出现火星,1分钟后开始燃烧但火苗微小不足以引燃纸巾。与1号电池不同的是,5号电池本身有烫热感。
  然后,记者实验7号电池。虽然在10秒左右铝箔纸冒烟,但是没有产生火星引发燃烧,http://www.cubs.whitbyscouts.org/?x=entry:entry111213-000027;comments:1#comments。铝箔纸和电池本身热量更强,有灼烫感。在用三种不同型号的电池进行实验的过程中,虽然铝箔纸起到导电的作用,但并没有触电手发麻的感觉。
  专家:实验原理是电源短路的现象
  口香糖铝箔纸和干电池生火的原理是什么?为什么型号不同的电池生火的时间不同?记者咨询了山东大学物理学院孟令国老师。孟令国老师介绍说,这个实验本身是一种短路的现象,一个电路中,利用导体直接连接电源两极则形成电源短路,而铝箔纸本身包含金属铝,而且铝箔纸的电阻小,在电源短路时形成非常大的电流,强大的电流使铝箔纸温度升高,当达到燃点时则冒烟燃烧。由于这些电池只有1,doudoune canada goose.5伏,不会对人身构成危险。但儿童最好不要效仿实验,以免发生烫伤等意外。
  同时,记者还了解到,1号电池体积大,内部电阻小,所以实验中电池自身产生热量少,表面不热。随着体积缩小,5号电池和7号电池的内阻越来越大,所以电池自身产生的热量越多,表面灼烫感越明显。同时,与7号电池相比,5号电池自身电量多,电流大,所以相同时间产生热量更多,生火更快,1号电池比5号电池生火时间更短。
  本报见习记者 姜豪 实习生 牟海涛  姜璇
   (来源:半岛网-半岛都市报) [编辑: 李敏娜]
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