3 ms·

What do you mean tennis balls are yellow? I always thought they were green? https://en.wikipedia.org/wiki/Tennis_ball#/media/File:Closeup_of_a_tennis_ball_(2).j

• probabletrain 5mo ago
  They're officially yellow. Many people (~50% in my experience) perceive this colour as green though. > Tennis balls are fluorescent yellow in professional competitions https://en.wikipedia.org/wiki/Tennis_ball https://en.wikipedia.org/wiki/Tennis_ball
  • DANmode 5mo ago
    Yellow and green are shown in the linked image.