Shadows are dark areas or shapes produced when an object blocks light from a light source, such as the sun or a lamp. They can vary in size and shape depending on the angle and intensity of the light, as well as the object's form. Shadows are an essential aspect of our visual experience, helping us perceive depth and distance in our environment. In art and photography, shadows play a crucial role in creating mood and dimension. Artists often use shadows to enhance the realism of their work or to evoke specific emotions. Understanding how to manipulate shadows can significantly impact the overall composition and effectiveness of visual storytelling.