Light Touch Secrets of the Bat Signal Stephen R. Wilk Investigating the real-life origin of, and physics behind, the celebrated beacon from the comic series Batman. 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 2022 Add a Comment Please enable JavaScript to view the comments powered by Disqus.