caption: The image shows a black and white drawing of a diagram of a sphere with a ball in the middle, surrounded by various shapes and text. The text reads "Amusements d'optique" which translates to "Optical Objects of Optique". The diagram is composed of a variety of shapes, including circles, squares, triangles, and rectangles, all of which are arranged in a symmetrical pattern. The colors used in the drawing are mostly shades of blue, green, and yellow, giving the image a vibrant and eye-catching look.