第章 会说话的纸盆子(2 / 2)

  你娃上这儿电疗来了么?

  刘汉少脑门黑线,终于开始反思,把这个玩意儿弄出来,让一群小娃们去瞎鼓捣,究竟是对还是错?

  “找你爹去,弄个圆铁环来!”

  “啊?啥铁环啊?”

  当初司马懿发明指南针,最初用的是天然磁石,但是天然磁石性脆,不容易打磨成型,刘汉少告诉他,把铁针与磁石摩擦,进行磁化,铁针也能变成磁针,所以后来批量生产的指南针,用的都是磁化过的铁针。

  现在刘汉少要做小喇叭,需要用到圆环磁铁,也不知道用磁化铁环行不行,反正也是实验,慢慢来吧,不行,再想别的办法。

  此时天色已晚,交代徒弟们准备下一节课所需要的各种材料,刘汉少就先行回宫去了。然而第二天一大早,天才刚蒙蒙亮,司马懿便驾驶着一辆木牛流马,带着蒲元和黄月英赶来永安宫。无他,就怕师傅事多,忘了去给他们上课。

  徒弟们此举使得刘汉少颇感欣慰,多好的娃呀,多么努力上进,多么热爱学习!

  好吧,也许这些小妖孽们并不是热爱学习,只是好奇爱玩罢了。可是,谁又能说这不是学习原本该有的样子呢?

  在皇后师娘们亲切而又慈祥的照料下,小妖孽们与师傅一起吃了个早饭,然后便拽着师傅直奔研究所。

  做好的铁环已经被司马懿和蒲元轮流在磁石上摩擦了半夜,漆包铜线也已经准备好,就等着刘汉少来缠线圈了。千万别小看汉朝工匠的技艺以及贵族的奢糜,别忘了“金缕玉衣”这种东西,“金缕”就是“金线”,所以造出漆包铜线,工匠们表示没压力。

  先让司马懿把圆环磁铁固定在导磁柱上,也就是俗称的“T铁”上,刘汉少

  拿着漆包铜线往一个空心硬纸卷上,一圈一圈挨着缠,准备制作“音圈”。等到黄月英看会了,便交给她去缠,自己再带着蒲元,找来纸张,准备做“纸盆”。

  推荐下,【换源神器】真心不错,值得装个,竟然安卓苹果手机都支持!

  毕竟太超前了,虽然小妖孽们都知道自己的活该怎么干,但是对于它们的作用却是一点也不知道。黄月英还十分严谨地问:“师傅,这要缠几圈呀?”

  刘汉少随口说:“就缠一百圈吧。”

  然后黄月英就低着头,瞪着眼,去数刘汉少先前缠过了多少圈。

  “纸盆”或者叫作“音盆”,用一个大圆片,中间挖一个小圆洞,然后剪掉一部分,折成喇叭状就成。“盆架”是昨天就已经让徒弟们准备好的,拿着和“纸盆”比一比,能扣进去就行了。

  一切准备好之后,小妖孽们围着刘汉少,就看见师傅先把导磁柱与盆架固定在一起,然后把“音圈”放在中间试了试,滑动无碍,再与音膜、纸盆粘在一起,放在盆架上。接下来还有折环、压边、扣防尘罩……终于等到两根铜线头从盆架上引出来,被固定好了之后,刘汉少一脸严肃地说:“去把电池拿来。”

  “电池”就是昨天那些装盐水的茶杯,蒲元倒是啥也不怕,领命而去,立刻蹿了,司马懿和黄月英看着刘汉少的脸色,多少都有点胆颤心惊。

  但是,今天的实验是刘汉少亲自动手做的,所以拒绝了蒲元的好意,仅用了一个茶杯。

  先接好一根线头,等到另一根线头轻轻一碰,这个极其简易的,大多都是纸糊的小喇叭便发出了微弱的电流声。

  也许是电压太低了,再加俩杯子。

  刘汉少又让蒲元跑去食堂,抓了一把小米过来,放几粒在小喇叭上。通电之后,徒弟们便惊讶地发现,师傅造的这个玩意除了会发出“刺刺啦啦”的杂音,还能让小米粒一跳一跳的。

  蒲元兴奋的也跟着小米粒一跳一跳的,但是刘汉少却说:“娃呀,先别高兴的太早,咱们才做了一半。”

  师徒四人忙活到现在,距离一个“完整的小喇叭”,的确是只做了一半,因为它只是一个“扬声器”,想要小喇叭里传出收破烂的声音,还需要一个“传声器”,也就是“话筒”。

  话筒和扬声器其实差不多,只不过一个是收集声波,转换成电波,一个是把电波转换成声波,播放出来。

  制作了一个“动圈式话筒”之后,把它与先前的扬声器连接起来,刘汉少要司马懿拿着扬声器走开,离自己远远的,然后对着话筒轻轻喊了一声:“德为。”

  起先可能是离的近,刘汉少本身说话的声音司马懿也能听到,所以没反应过来,还转身问刘汉少啥事。刘汉少只好说你走远点,再走远点。等到现有的铜线被拉到了头,刘汉少双手捂着话筒,又喊了一声:“德为。”

  司马懿终于惊恐地发现,竟然是自己手里捧着的这个纸盆子在喊自己的名字!

  这不是大白天见了鬼了么?

  受惊之下,司马懿一下子就把捧着的扬声器给扔了,并且恐极而怒,歇斯底里地发出一声来自灵魂深处的拷问:“粗话的师傅,这玩意会叫唤,你就不能提前告诉我一声吗?”

</p>

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