Why isn’t the Sky Violet? Welcome to Pembrokeshire U3A › Forums › Science and Technology › Why isn’t the Sky Violet? This topic is empty. Viewing 1 post (of 1 total) Author Posts December 10, 2012 at 10:05 am #7338 AnonymousGuest A question for all the clever scientists out there: http://xkcd.org/1145/ Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In