搜索 - 科创

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汉诺威工业展刚刚落下帷幕不久，你胆儿够肥愿意亲手制作一台小型激光雕刻机么？其实也不难：拆两台DVD，来回倒腾几遍就能搞定。200毫瓦的激光发射器不算犀利，但足够闪瞎你的双眼；即使不如专业器械那样削铁...

光镊名称的由来A.Ashkin于1970年发现当一束激光射向微米微粒时，该微粒会受到一个沿光线传播方向的推力；用两束激光对射时就可以将微粒夹持住。后来，他进一步发现利用一束会聚激光可以在三维方向...

本帖最后由虎哥于 2014-2-18 00:37 编辑本系列经典的文章由BG2VO多年前所著，目前从未被超越，帖到KC供大家参考。第一部分，概述电子电路的电压基准最早是用稳压二极管，利...

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