Could you make an umbrella out of lasers?https://www.youtube.com/watch?v=zgBTwtg7H8E这个视频探讨了用激光伞拦截雨水的概念。它计算了蒸发一升水所需的能量,结果显示一场大雨每升水需要大约2.6MJ。适应光学技术提议针对每滴雨水,这就需要一平方米约每秒500次脉冲,这
担任NASA的合同程序员和机器人专家。后来成为全职网络漫画家，并创立了是美国热门科普漫画网站xkcd。(xkcd...
What if you tried to print Wikipedia? https://www.youtube.com/watch?v=RgBYohJ7mIk 视频讨论了一个假设问题:如果想要打印整个维基百科并保持与在线版本的更新同步,需要多少台打印机。问题来自Suzanne,她想知道为了跟上英文维基百科的每日约150,000次编辑(每分钟约100次),需要多少台打印机。视频中提到,只需要...
What If? 那些古怪又让人忧心的问题 前NASA成员 美国很火科普博客xkcd幽默问答集 英文版 进口英语原版书籍 英文原版 Munroe, Randall 作者:Munroe出版社:HMH出版时间:2019年01月 手机专享价 ¥ 当当价 降价通知 ¥116.00 配送至 广东广州市 至 北京市东城区 服务 由“瑞雅图书专营店”发货,并提供售后服务...
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What If? 2 WI?•TE•HT A webcomic of romance, sarcasm, math, and language. Special 10th anniversary edition of WHAT IF?—revised and annotated with brand-new illustrations and answers to important questions you never thought to ask—out now. Order it here! What...
If the comet were placed in the ocean,[3] the added ice would cool the water down by only about a millionth of a degree. If you set the comet on land, it would soak up heat from the atmosphere—which contains much less stored heat than the oceans—briefly cooling the air by an ave...
Fans of xkcd ask Munroe a lot of strange questions: What if you tried to hit a baseball pitched at 90 percent the speed of light? How fast can you hit a speed bump while driving and live? If there was a robot apocalypse, how long would humanity last? What if everyone only had one...
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天才作者,前NASA员工、网络科普专栏WhatIf合集:作者曾在NASA制造机器人,后来成为科普漫画家,玩转物理、天文、生物、化学、数学各学科知识,轻松接招粉丝们提出的脑洞大开的问题,配上xkcd风格的火柴人漫画,幽默机智的答案让人拍案叫绝!让科学流行起来:机智问答 幽默漫画,全书超过1/3内容首次发表,不怕你敢问,只怕你脑洞...