How does the artist use values in painting or drawing to indicate the amount of light object receive?

Artists use values in painting or drawing to create a sense of light and depth by manipulating the shades of colors from light to dark. Lighter values typically indicate areas that receive more light, while darker values suggest shadowed or recessed areas. By skillfully contrasting these values, artists can evoke the three-dimensionality of objects and convey the direction and intensity of light, enhancing the overall realism of the artwork. This technique helps guide the viewer's eye and emphasizes focal points within the composition.