[what if]第82期:彗星与棒球

原作:http://what-if.xkcd.com/82 译者:猪的米 What if 系列:https://songshuhui.net/archives/tag/what-if 天体物理学家常说”这次的彗星任务就像从纽约扔一个棒球砸中旧金山指定的一扇玻璃一样难”。那么事实上两者的难度真的差不多吗? —— Tom Foster 回答: 不是,扔棒球砸中某扇窗要难上许多。 要想从纽约扔一个东西到洛杉矶,你要确保它能像洲际弹道导弹那样飞出大气层。[1] 但不幸的是,棒球如此小的体型就决定了它不可能飞出大气层。不管棒球的速度能达到多高,它都到达不了太空。如果你真的想让棒球击中洛杉矶的某扇窗的话,你最好试试朝刚起飞的飞机扔棒球,然后寄希望于它卡在飞机的起落架里。 题主Tom提到的那个天体物理学家… Read more

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[1326] Sharks

Title Text:’Now, minions, I’m off to inspect our shark cages.’ ‘Do you really need to inspect them this often?’ ‘PRISONERS MUST NEVER ESCAPE.’

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[1325] Rejection

Title Text:Perhaps you need a crash course in taking hints. Here’s your first lesson: We’re not actually walking somewhere together; I’m trying to leave this conversation and you’re following me.

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[1324] Weather

Title Text:At least if you’re really into, like, Turkish archaeology, store clerks aren’t like ‘hey, how ’bout those Derinkuyu underground cities!’ when they’re trying to be polite.

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[1323] Protocol

Title Text:Changing the names would be easier, but if you’re not comfortable lying, try only making friends with people named Alice, Bob, Carol, etc.

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[what if]第81期:徒手抓子弹

原作:http://what-if.xkcd.com/81 译者:猪的米 What if 系列:https://songshuhui.net/archives/tag/what-if 有没有办法可以安全地徒手抓住子弹?比如说一个人在海平面朝上开枪,然后另一个人在山上在子弹的极限射程附近准备着抓住子弹? —— Ed Hui, London 回答: 可以。 徒手抓子弹是一个很普通的魔术把戏,看上去魔术师就像在子弹飞行途中把它抓住了一样——通常是用牙齿。这当然只是幻觉啦,实际上这么做是不可能的。[1] 但在一些合适的情况下,人可以徒手抓住子弹,不过这需要很有耐心。[2] 向上发射的子弹总会达到最大高度。[3]在最大高度处子弹可能不会完全停下来,很有可能的一种情况是子弹在以每秒几米的速度横向漂移。在这种情况下,只要你在正确的… Read more

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[1321] Cold

Title Text:’You see the same pattern all over. Take Detroit–‘ ‘Hold on. Why do you know all these statistics offhand?’ ‘Oh, um, no idea. I definitely spend my evenings hanging out with friends, and not curating a REALLY NEAT database…

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[1320] Walmart

Title Text:What I really want is to hang out where I hung out with my friends in college, but have all my older relatives there too.< Origin:https://xkcd.com/1320/ https://www.explainxkcd.com/wiki/index.php/1320:_Walmart https://app-xkcd-cn.appspot.com/ 这部漫画讽刺了大型社交网络(如Facebook和Google+)试图聚合用户在线社交存在的各个方面的方式。早期的社交网络有更多的细节;例如MySpace起源于音乐焦点,甚至更早的各种公告板系统都围绕特定主题。相比之下,许多社交媒体公司试图将用户… Read more

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