Year: 2014
[1349] Shouldn’t Be Hard
Title Text:(six hours later) ARGH. How are these stupid microchips so durable?! All I want is to undo a massive industrial process with household tools!
[1348] Before the Internet
Title Text:We watched DAYTIME TV. Do you realize how soul-crushing it was? I’d rather eat an iPad than go back to watching daytime TV.
[1347] t Distribution
Title Text:If data fails the Teacher’s t test, you can just force it to take the test again until it passes.
[what if]第89期:钨制灶台
原作:http://what-if.xkcd.com/89 译者:猪的米 What if 系列:https://songshuhui.net/archives/tag/what-if 提问: 如果我把一块钨制灶台扔到太阳里,它在消失前能落到多里面? —— Michael Leuchtenberg 回答: 掉不到多里面。 由于钨有着极高的熔点,拿它来做太阳跳伞灶台确实是一个不错[1]的选择。 首先遇到的问题是阳光。随着灶台离太阳越来越近,它的温度也会越来越高。虽然钨在所有单质中熔点最高,但别忘了太阳可是太阳系中最炽热的东西之一。当灶台靠近到离太阳几个半径距离之内时,它就直接汽化了。 (如果真的发射了这个探测器的话,它最多只能往里面跑1/8水星轨道半径的距离) 如果你在灶台外边包一层热保护罩,或者把它从一个向太阳俯冲的宇宙… Read more
[1346] Career
Title Text:They’d convince me to come out of retirement for one last job: biting into a giant lump of slightly soft wax a couple of times.
[1345] Answers
Title Text:Stanford sleep researcher William Dement said that after 50 years of studying sleep, the only really solid explanation he knows for why we do it is ‘because we get sleepy’.
[what if]第88期:汽水罐子
原作:http://what-if.xkcd.com/88 译者:猪的米 What if 系列:https://songshuhui.net/archives/tag/what-if 提问: 全世界所有的瓶装汽水里含有多少二氧化碳?如果要想大气层里的二氧化碳浓度回到工业化之前的水平,需要多少瓶汽水才能装完这些二氧化碳? —— Brandon Seah 回答: 在人类文明史绝大部分时间里,大气层二氧化碳的浓度约为270ppm,而在过去的100年间,工业化将这个数字提升到了400ppm。 1ppm的二氧化碳重约78亿吨,而一罐汽水所含的二氧化碳含量在2.2克左右,因而你需要4.5*10^17瓶汽水才能装完这么多二氧化碳,这都足够把地球所有陆地表面都覆盖上10层汽水罐子了。 (散逸层、岩流圈、岩石圈、汽水圈) 显然我们没有… Read more
[1343] Manuals
Title Text:The most ridiculous offender of all is the sudoers man page, which for 15 years has started with a ‘quick guide’ to EBNF, a system for defining the grammar of a language. ‘Don’t despair’, it says, ‘the definitions below…