第一千零五十六章 电磁感应
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这个东西看起来有点像后世的自行车,但却没有轮子,反而在后面连着一个密密麻麻的线圈,线圈外面还固定着几块磁铁,其实这就是一个简易的发电机,用物理名词来解释的话,这就是一个电磁感应装置。
看着这个奇形怪状的发电机,下面的李治等人也都是一脸的不解,搞不明白这东西是干什么用的,不过李休这时却是坏笑一声,当下指着李治道:“雉奴,咱们来玩一个游戏,你信不信我不用碰触不到你,就能让你自己跳起来?”
“我不信!”李治听到李休的话也不由得摇头道,因为李休的话根本不符合常理。
李休等的就是李治这句话,当下他让对方上来,然后把手抓住发电机的两个线头,自己亲自坐在发电机前面用力蹬了起来,打结的皮绳也转动起来,然后带动后面发电机的线圈也转了起来。
只要学过一点物理的人都知道,线圈在磁铁中运动时会产生电流,当然李休的这个简易发电机产生的电流并不强,刚开始李治并没有什么感觉,但随着线圈转的越来越快,他也感觉两手麻麻的,这让李治也是吓的不轻,而且这种麻麻的感觉开始顺着他的手臂向全身蔓延,更让他露出惊骇的表情,最后禁不住大叫一声松手,同时双脚也不受控制的一蹬,竟然真的跳了起来。
“哇”下面的几个学生看到李治竟然真的跳了起来,当下也不由得惊叫一声,毕竟刚才李休说让李治自己跳起来时,他们也不怎么相信。
“先生这到底是怎么回事,为什么我感觉全身发麻,而且还控制不住自己?”李治连退几步这才站好,然后一边搓着手臂一边不解的问道,如果不是从小听李休的课,他甚至会以为李休在施什么魔法了?
“呵呵,金属在一个磁场中运动时,会产生一定的电荷,你刚才感受的就是电的作用,这个电和下雨时的闪电在本质上是相同的,只不过闪电的能量太大,如果劈中人话的话,几乎可以让人变成焦炭,但是这个电却只能让你感觉全身发麻。”李休这时笑呵呵的解释道,说到这里时,他再次不怀好意的看了一下自己的这些学生道,“你们谁还想试一试被电一下是什么感觉?”
“试一下吧,刚开始虽然感觉有点怪,但是被电一下后,感觉还是挺不错的!”李治这个腹黑的家伙也在旁边鼓动道,他自己吃了个亏,也希望别人跟着自己一起吃亏。
不过李休的这些学生也都不傻,一个个都低下头不敢和李休对视,生怕他叫自己上去,值得一提的是,自从李晋和平安郎各自去求学后,李休的这些学生中绝大部分都是女孩子,除了李治外,也就只有王方翼一个男孩子,所以李休的目光也落到了他的身上。
王方翼今年已经十一岁了,平时他的话不多,为人也比较闷,以前倒是和平安郎很聊的来,不过现在平安郎去学医了,结果他的话也更少了,相比其它的学生,他的存在感也相当的低,有时连李休都有些忽略自己这个学生了。
王方翼本来也低下头,但是感觉到李休一直看着自己,他不想让李休失望,,最后只能硬着头皮站起来道:“我试一试吧!”
“好,方翼你很有勇气!”李休看王方翼站起来,当下也是大喜道,他还没玩够呢,而且这个简易的发电机发出的电流并不强,对人体也并没有什么伤害。
王方翼硬着头皮上去,结果自然也和李治一样,被电的跳了起来,李休也趁机讲了一下电磁感应的原理,有了实物的参照,再加上刚才的实验,也能让他们的记忆更加深刻一些。
等到上午的课讲完了,李休带着孩子们一起吃饭,家里给这些孩子专门设有食堂,中午就在一起吃饭,这样也可以加深他们的感情,不过在吃饭的时候,王方翼却端着自己的饭菜来到李休旁边坐下,然后十分认真的道:“先生,我有件事想和您商量!”
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