[2325] Endorheic Basin

Title Text:My biggest fear is that colonial engineers will try to flood me to generate electricity. My biggest hope is that I’ll develop sailing stones. Origin:https://xkcd.com/2325/ https://www.explainxkcd.com/wiki/index.php/2325:_Endorheic_Basin 内流盆地 我最害怕的是殖民地的工程师们会为了发电会不惜淹没我。我最希望的是能开采出风帆石。 脚注: [1]内流盆地:是指一个其中没有任何水体与外界水体相连的区域。一般情形下在地球上大部分陆地地区,各种降水均通过河流流入海洋,以完成水气循环。而在内流盆地… Read more

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[2324] Old Days 2

Title Text:The git vehicle fleet eventually pivoted to selling ice cream, but some holdovers remain. If you flag down an ice cream truck and hand the driver a floppy disk, a few hours later you’ll get an invite to a…

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[2323] Modeling Study

Title Text:You’ve got questions, we’ve got assumptions. Origin:https://xkcd.com/2323/ https://www.explainxkcd.com/wiki/index.php/2323:_Modeling_Study 模型研究 你有问题,我们就有假设。 http://xkcd.in/comic?lg=cn&id=2323 在这部漫画中,对两种常见的科学研究类型进行了幽默的比较:实证研究(设计用于检验科学理论的实验)和数学建模,其中产生数学公式以预测物理系统在给定情况下的行为。在实证研究中,有关现有理论局限性的难题通常倾向于以抽象形式解决,这是在大多数科学文章开始时对论文的简要总结。在建模研究中,将基于现… Read more

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[2322] ISO Paper Size Golden Spiral

Title Text:The ISO 216 standard ratio is cos(45掳), but American letter paper is 8.5×11 because it uses radians, and 11/8.5 = pi/4. Origin:https://xkcd.com/2322/ https://www.explainxkcd.com/wiki/index.php/2322:_ISO_Paper_Size_Golden_Spiral 国际标准纸张尺寸的黄金螺旋线 ISO 216国际标准纸张的比例是cos(45°),但美国信纸大小是8.5×11。因为它使用弧度制,而11/8.5 = π/4。 脚注: 国际标准化组织的ISO 216定义了今日世界上大多数国家所使用纸张尺寸的国际标准。 http://… Read more

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[2321] Low-Background Metal

Title Text:The only effect on the history books were a few confusing accounts of something called ‘Greek fire.’ Origin:https://xkcd.com/2321/ https://www.explainxkcd.com/wiki/index.php/2321:_Low-Background_Metal 低本底辐射钢 对历史书的唯一影响就是就是多了一些令人费解的所谓“希腊火”的描述。 脚注: [1]低本底辐射钢:又称低背景钢,是在1940年代和1950年代第一代原子弹爆炸前生产的钢材。由于在1945年,随着三位一体核试验、广岛、长崎核轰炸,以及冷战早期一系列核武器试验的进行,世界背景辐射量有明显升… Read more

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[2320] Millennium Problems

Title Text:The hard part about opening a hole in the proof of the Poincar茅 conjecture is that Grigori Perelman will come out of retirement to try to fix it by drawing a loop around the hole and contracting it to…

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[2319] Large Number Formats

Title Text:10^13.4024: A person who has come back to numbers after a journey deep into some random theoretical field Origin:https://xkcd.com/2319/ https://www.explainxkcd.com/wiki/index.php/2319:_Large_Number_Formats 大数字的格式 10^13.4024:曾深入某一理论领域的人。 脚注: [1]年长的英国人:英国古英语中billion表示万亿,现在英美统一为十亿。长级差制的英文表示是 long scale,译自法语词汇 échelle longue,意思是在某数字命名系统中,billion一词用来表示“万亿”。短级差制的英文表示是 sho… Read more

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[2318] Dynamic Entropy

Title Text:Despite years of effort by my physics professors to normalize it, deep down I remain convinced that ‘dynamical’ is not really a word. Origin:https://xkcd.com/2318/ https://www.explainxkcd.com/wiki/index.php/2318:_Dynamic_Entropy 动态熵 尽管我的物理教授们努力多年使其成为一种常规的表达,但我内心深处仍然认为‘dynamical’不是个真正的词。 脚注: 飓风眼:理查德.贝尔曼自传。 克劳德.香农:信息论创始人,引入信息熵。 http://xkcd.in/comic?lg=cn&amp… Read more

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[2317] Pinouts

Title Text:The other side of USB-C is rotationally symmetric except that the 3rd pin from the top is designated FIREWIRE TRIBUTE PIN. Origin:https://xkcd.com/2317/ https://www.explainxkcd.com/wiki/index.php/2317:_Pinouts 引脚分配图 USB-C 的另一侧是轴对称的,只不过顶部的第三个引脚则是用来做火线。 http://xkcd.in/comic?lg=cn&id=2317 电子连接器旨在传输信息和电力。甲引出线图描述了每个销诸如传送数据,传输功率,身体机能(键控)等。在此漫画有在连接器所使用的实际销荒谬替代的功能。引脚标签… Read more

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[2316] Hair Growth Rate

Title Text:Hourly haircuts would be annoying, but they’d be easier to do yourself, since you’d have adjacent hairs as a guide. Growing it out would be a huge pain, though. Origin:https://xkcd.com/2316/ https://www.explainxkcd.com/wiki/index.php/2316:_Hair_Growth_Rate 头发的生长速度 每小时理一次发会很烦人,但由于有旁边的头发作参照,你自己剪会容易点。 不过,照这速度让新头发都长出来就要大费功夫了。 http://xkcd.in/comic?lg=cn&id=2316… Read more

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