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    真是好兆头哇

     
     有同学可能会问:一个电子连续接受几个光子不就解决光强的问题了吗
     你看一万个光子照射到金属板上,也就能产生大约一百个光电子,可见受缚电子要想获得能量的可能性很小,虽然它有很强烈的意愿... 
     所以一个电子能接收到一个光子就好像中了五百万一样,可谁有那么大本事中一个五百万接着再中一个五百万?
     是,五百万其实也不少了,可是你中奖了周围电子能不眼红吗?它们还得不停的撞你,跟你发生无规则振动,那点能量一会儿也就完了。
     
     以上是新任物理老师在今天课上的一段关于光粒子性的讲解,听完后我感激涕零,象征性的——物理终于有救了
     
     还有一件事要表扬一下自己, 请看下面

    Dear Lisa,

     Thanks for writing in to BrainPOP.com!

     In your message, you pointed out an error with our “Sun Protection” quiz. You were absolutely right – humans can’t see UV light!

     We have fixed the error in our database, and the quiz should display the correct answer as soon as our site updates itself.

     That usually   takes a few days, so the correct answer should appear by Monday or Tuesday, at the latest.

      Thanks again for bringing this error to our attention.

      Sincerely,
      Brian Levinson
    BrainPOP.com

    眨眼

     

    Comments (4)

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    Gewrote:
    我一定得 给你 留个信儿,明天我就踏上学文的大道了……也不知道以后还有没有命过来留信儿了……
    Sept. 2
    Hongbo Siwrote:
    我早就着迷量子物理了,但我不太敢看我们的物理书有关量子力学的内容。。。我的微积分水平还不够让我看得懂的。。。
    我们这学期有两个生物课程,生物进化论和分子基因学。都挺难的。上个学期我们的学的细胞生物学和生物分类学。要是说学到那种深度,我也还是真不好说,但足够AP Exam要求的了。 
    安企鹅。。。
    Aug. 23
    Hongbo Siwrote:
    不错啊,我对粒子的二象性一直很感兴趣。刚学完双缝干涉,现在在学衍射图像和计算,还有光栅之类的波动问题。题都挺难的,得加紧看书。
    我前一阵在国大听的一位诺贝尔物理学奖获得者的演讲就和光电效应和能级跃迁有关,里面还提到了些特别有趣的性质,包括反跃迁使能量放大等奇怪的现象。呵呵。量子力学我得明年才学呢。。。
     
    Aug. 23
    narcissusswrote:
    南开中学的老师就是nb,开开心心的就上完课了。
    我也开学了,实习。都是苦命的孩儿…… 
    Aug. 18

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