4 ms·

I'm fond of this video that illustrates this: https://www.youtube.com/watch?v=oOlDewpCfZQ https://www.youtube.com/watch?v=oOlDewpCfZQ

• scott_karana 12y ago
  That video is, of course, linked in the article... ;)
  • matthijs_ 12y ago
    This is a different one actually than the one in the article!
• yellowapple 12y ago
  That is incredibly beautiful. :')