第二百二十四章 养鸡场和电
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李植决定把电带到大明。
发电的原理是很简单的,用线圈在两个磁铁中切割磁力线,线圈中就会产生电流。电动机的发明虽然远远晚于蒸汽机,但是电动机的原理和制造难度都比蒸汽机简单的多。与其说是十七世纪的技术水平不能发现电的存在,不如说是人类探索的区域还没有偶然地进入到这一领域。
但是对于从充满电的后世穿越到大明的李植来说,在十七世纪发明电是很容易的事情。
李植决定先做出一个实验性的发电机出来。
要做发电机,首先要把铜拉成丝。这并没有什么难度,稍微有些手艺的铜匠都会做。李植在天津卫城中找到一个老铜匠。那老铜匠是做帽子上的铜饰的,天天拉铜丝。他直接将铜锭加热退火,用一个简易拉丝机拉出长长的铜丝出来。
得到了铜丝后要把铜丝变成外部绝缘的电线。想要得到实用的电流必须使用圈数足够的线圈,如果铜线和铜线之间没有绝缘体,就等于只有一圈铜线,发出了的电流就微乎其微,毫无意义了。
橡胶这年头没有。虽然棉布麻布都是绝缘体,但是这两种布料都容易从空气中吸水。一吸水后,这些布料就导电了。
李植最后只能用丝布做绝缘体。丝布虽然薄,但是不吸水,绝缘效果很好,在不高的电压下也不会被击穿。虽然价格昂贵了一些,但对于李植的实验性发电机来说还是可以承受的。
李植买来一匹杭缎,剪成长条,一点一点包裹住铜丝。然后李植把这些包裹着丝布的铜丝电线卷成直径一米的线圈,足足卷了一百圈。
接下来就是建立磁场了,这也好办。李植托做纯碱生意的薛员外,依靠它走南闯北的阅历,在京城买到了两块大磁铁,用马车运到了天津来。李植铸造了一个铁架子把两块大磁铁固定在彼此对面,形成了一个磁场。
最后李植把线圈装到一个轴承上面,将线圈在两块大磁铁中转动,就能在线圈中生成电流了。
李植找来一个铜,在里面装满了饱和的食盐水,然后把线圈两边碰触的电线伸进水桶里。
一在磁场中摇动线圈,水桶里的两根电线就冒出了无数气泡。显然,线圈中产生了电流,分解了氯化钠溶液。在阳极生成的是氯气,阴极生成的是氢气。
李植从屋外找来一个家丁,让家丁继续摇动线圈,自己去阳极闻了闻,确实闻到了刺鼻的氯气味道。
看到水桶里啾啾冒出的氯气,摇线圈的家丁一肚子惊讶,讪讪说道:“将军大人,你这是变法术啊?”
李植笑了笑,让家丁持续转动磁场中的线圈,直到那刺鼻的味道不再冒出为止。没有氯气分解出,意味着氯化钠已经全部变成氢氧化钠了,电解设备开始电解出氧气出来了。
李植要检验一下生产出来的溶液是不是氢氧化钠,就把那一桶电解生成的溶液和油脂一起加热,果然看到一层肥皂浮在了水面上。
李植的试验性发电机,圆满成功。
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