Light Touch The Yellow Sun Paradox Stephen R. Wilk There are a few things you can count on in this world: The sky is blue; grass is green; and the Sun is yellow ... right? Log in or become a member to view the full text of this article. This article may be available for purchase via the search at Optica Publishing Group. Optica Members get the full text of Optics & Photonics News, plus a variety of other member benefits. Publish Date: 01 March 2009 Add a Comment Please enable JavaScript to view the comments powered by Disqus.