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汪诘:科学有故事(主打)

亿万年的孤独:05巡天神器

27 Nov 2016

Description

30多岁的德雷克此时已经练就了一身的武艺,但是,他却一直在寻觅一件称手的兵器。俗话说没有精钢钻,揽不了瓷器活,德雷克精通射电天文的理论,但如果没有一台威力强大的射电天文望远镜,那么不管有多好的理论都没用。对于德雷克来说,最好的武器莫过于射电望远镜,并且是越灵敏越好。那么,影响射电望远镜灵敏度的关键因素是什么呢?那就是天线,也就是那口“锅”的直径,直径越大则灵敏度也就越高。为了探测到从遥远的宇宙中发射过来的微弱电磁波,这只锅做的多大都不嫌大。

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