xkcd

英文频道 中文频道

XKCD中文站,一个关于浪漫、隐喻、数字、以及语言的线上漫画。

Radians are Cursed

Radians are Cursed
Phil Plait once pointed out that you can calculate the total angular area of the sky this way. If the sky is a sphere with radius 57.3 degrees, then its area is 4*pi*r^2=41,253 square degrees. This makes dimensional analysts SO mad, but you can't argue with results.

【英文频道】共收录 3084 篇,中文频道收录了一些热门漫画,可前往 中文频道 围观。