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  • 焰火為什么會有美麗的光芒?

    六一兒童網兒童動畫幼兒教育十萬個為什么

    焰火為什么會有美麗的光芒?:

    • 發布時間: 2018-09-25 16:13
      所屬類別: 十萬個為什么
      介紹: 嘟拉:爸爸,焰火為什么會有這么美麗的光芒???
      嘟拉爸爸:焰火又稱煙火、煙花,它的化學原理其實和爆竹大同小異,都包含火藥和藥引。但是人們在制作煙花過程中會加入一些發光劑和發色劑,這樣,焰火就能發出五彩繽紛的光。
      嘟拉:可是,為什么焰火有這么多顏色呢?
      嘟拉爸爸:因為發光劑是一些金屬粉末,所以它們被點燃時會發出強光;而發色劑就是含有金屬離子的金屬化合物,當這些金屬離子與氧分子發生劇烈反應時,我們就能看到化合物燃燒時發放出火焰。由于它們種類不同,因此發出的光芒也就不一樣了。
      嘟拉:哦,原來是這樣??!
      嘟拉爸爸:嗯,但是焰火雖然好看,制作過程卻相當復雜,危險性也極高!因為焰火里有能釋放大量熱氣的發光劑,極易發生爆炸,所以我們必須要合理使用焰火,嚴格按照燃放操作規程進行購買、運輸、存儲與燃放,保證周邊環境與自身安全。

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