Figure Q36.26 shows a lithograph by M. C. Escher titled Hand with Reflection Sphere (Self-Portrait in Spherical Mirror). Escher had this to say about the work: €œThe picture shows a spherical mirror, resting on a left hand.

But as a print is the reverse of the original drawing on stone, it was my right hand that you see depicted. (Being left handed, I needed my left hand to make the drawing.) Such a globe reflection collects almost one€™s whole surroundings in one disk-shaped image. The whole room, four walls, the floor, and the ceiling, everything, albeit distorted, is compressed into that one small circle. Your own head, or more exactly the point between your eyes, is the absolute center. No matter how you turn or twist yourself, you can€™t get out of that central point. You are immovably the focus, the unshakable core, of your world.€ Comment on the accuracy of Escher€™s description.