xkcd-com
feeds.twtxt.net
 (3y ago)

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. ⌘ Read more

⤋ Read More