800px-Reflection_in_a_soap_bubble_edit

Image: “Reflection in a Soap Bubble,” Soap bubble with reflection of house and tree in it, by Brocken Inaglory, from Wikipedia …  https://commons.wikimedia.org/wiki/File:Reflection_in_a_soap_bubble_edit.jpg …  Creative Commons Attribution-Share Alike 3.0 Unported license.