[分享]烟花之原理（来自互动百科）

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<p class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">烟花，俨然成为了春节特别是除夕晚上的必备节目，无论是璀璨夺目还是声响悦人的烟花相信都会令大家流连其中（即使你我知道烟花其实是如此的稍纵即逝转瞬即过）。相信大家在观赏到大型的烟花燃放节目时都会由衷感慨：太美了！但是诸位是否研究过烟花的原理呢？其实原理是很简单的，下面将为大家揭晓烟花的原理（来自互动百科的延伸讲解）：</span></p>
<p class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span style="FONT-SIZE: 12pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相信看过美剧——越狱的朋友们都知道</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #333333">Micheal</span><span style="FONT-SIZE: 12pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是一个非常有才的男猪脚，在第四季中有一段时这样的：为了获得“锡拉”的存储器，</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #333333">Micheal</span><span style="FONT-SIZE: 12pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">需要穿透后墙将锡拉拿出，他使用了我们初中都有学过的著名化学反应——铝热反应（</span><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">镁条为引燃剂，氯酸钾为助燃剂，用铝跟某些金属发生放热现象的化学反应），可见知识是多么的重要（当然在这里不提倡将知识用于非理性的行为）。</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: Arial; LETTER-SPACING: 0.4pt"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></p>
<p class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #333333"><o:p>&nbsp;</o:p></span></p>
<p class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">烟花的化学原理，同爆竹的相似，其结构都包含黑火药和药引。燃放烟花后，类似以上提到的化学反应引发爆炸，而爆炸过程中所释放出来的能量，绝大部分转化成光能呈现。</span><span style="FONT-SIZE: 12pt; COLOR: #003366"> </span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">烟花的最大特色是能够放出五彩缤纷的颜色。颜色的产生主要是因是在制作过程中加了发光剂和发色剂。</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><br /></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发光剂是金属镁或金属铝的粉末。当这些金属燃烧时，会发出白炽的强光。发色剂其实只不过是一些金属</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><a title=化合物 href="http://www.hudong.com/w/index.php?title=%E5%8C%96%E5%90%88%E7%89%A9&amp;variant=zh-cn"><span lang=EN-US style="COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><span lang=EN-US>化合物</span></span></a></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。金属化合物含有金属离子。当这些金属离子被燃烧时，会发放出独特的火焰颜色。不同种类的金属化合物在燃烧时，会发放出不同颜色的光芒。</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><br /></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">举例说，</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><a title=氯化鈉 href="http://www.hudong.com/w/index.php?title=%E6%B0%AF%E5%8C%96%E9%88%89&amp;variant=zh-cn"><span lang=EN-US style="COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><span lang=EN-US>氯化钠</span></span></a></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><a title=硫酸钠 href="http://www.hudong.com/w/index.php?title=%E7%A1%AB%E9%85%B8%E9%92%A0&amp;variant=zh-cn"><span lang=EN-US style="COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><span lang=EN-US>硫酸钠</span></span></a></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">都属于</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><a title=鈉 href="http://www.hudong.com/w/index.php?title=%E9%88%89&amp;variant=zh-cn"><span lang=EN-US style="COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><span lang=EN-US>钠</span></span></a></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的化合物，他们在燃烧时便会发出金黄色火焰。</span><span style="FONT-SIZE: 12pt; COLOR: #003366"> </span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同样道理，</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><a title=硝酸钙 href="http://www.hudong.com/w/index.php?title=%E7%A1%9D%E9%85%B8%E9%92%99&amp;variant=zh-cn"><span lang=EN-US style="COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><span lang=EN-US>硝酸钙</span></span></a></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><a title=碳酸鈣 href="http://www.hudong.com/w/index.php?title=%E7%A2%B3%E9%85%B8%E9%88%A3&amp;variant=zh-cn"><span lang=EN-US style="COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><span lang=EN-US>碳酸钙</span></span></a></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在燃烧时会发出砖红色火焰</span><span style="FONT-SIZE: 12pt; COLOR: #003366"> </span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><br /></span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">其实在化学科，我们常常会运用以上结果来测试物质中所含的金属。这类型的实验称为焰色试验</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366">)</span><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。烟花便是利用金属的这种特性制成的。制作烟花的人经过巧妙的排列，决定燃烧的先后次序。这样，烟花引爆后，便能在漆黑的天空中绽放出鲜艳夺目、五彩缤纷的图案了。</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366"><o:p></o:p></span></p>
<p class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span style="FONT-SIZE: 12pt; COLOR: #003366; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">至于烟花为什么升高到一定高度就燃放？烟花为什么会有多种声响？烟花为什么能在高空持续燃放？烟花为什么能旋转？如此多的问题，这就很需要各位来详细解答了</span><span lang=EN-US style="FONT-SIZE: 12pt; COLOR: #003366">…<o:p></o:p></span></p></div>

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