## Diagram: Gnomon and Shadow ### Overview The image is a diagram illustrating a gnomon and its shadow. It shows the relationship between the sun, the gnomon, and the shadow it casts. ### Components/Axes * **Sun:** Located at the top-left of the image, depicted as a yellow cartoon sun. * **Gnomon:** A tall, brown, vertical object with a pointed top, labeled "Gnomon" in red text to the left of the object. * **Ombre:** The shadow cast by the gnomon, represented as a dark gray horizontal line extending from the base of the gnomon to the right, labeled "Ombre" in black text above the line. Ombre is French for shadow. * **Ground:** Represented by a green horizontal line beneath the gnomon and the shadow. * **Sun Ray:** A dotted black line extending from the sun to the tip of the gnomon and then to the end of the shadow. * **Figure Label:** A text box on the right side of the image contains the text "Fig 1. The Gnomon and its shadow [4]." ### Detailed Analysis * The sun is positioned at the top-left, suggesting the light source. * The gnomon is a vertical object, acting as the indicator. * The shadow (ombre) is cast horizontally from the base of the gnomon. * The dotted line represents the path of the sun's ray, connecting the sun, the top of the gnomon, and the end of the shadow. ### Key Observations * The diagram simplifies the concept of how a gnomon casts a shadow based on the sun's position. * The angle of the sun's ray determines the length of the shadow. ### Interpretation The diagram illustrates the basic principle of a sundial, where the position of the shadow cast by the gnomon indicates the time of day. The length and direction of the shadow change as the sun moves across the sky. The diagram serves as a visual aid to understand the relationship between the sun, the gnomon, and the shadow it casts.