Stars are not typically considered a primary light source in art, as they are too distant and faint to have a significant impact on the illumination of a scene.

Chiaroscuro is the term used to describe the gradual transition from light to dark in a painting or drawing, creating a sense of depth and volume.

Caravaggio is known for his innovative use of light and shadow, creating dramatic and realistic scenes with strong contrasts between light and dark.

Shadow is the term used to describe the area of a painting or drawing that is completely devoid of light, creating a sense of depth and contrast.

Core shadow is not a type of shadow in art. Cast shadow, form shadow, and reflected shadow are the three main types of shadows.

Highlight is the term used to describe the lightest area of a painting or drawing, creating a sense of contrast and depth.

Perspective is not a factor that directly affects the appearance of light and shadow in a painting or drawing. Color, texture, and form are the primary factors that influence the way light and shadow are depicted.

Sfumato is the term used to describe the gradual transition from dark to light in a painting or drawing, creating a soft and hazy effect.

Leonardo da Vinci is known for his masterful use of sfumato, creating a sense of mystery and atmosphere in his paintings.

Midtone is the term used to describe the area of a painting or drawing that is neither completely light nor completely dark, creating a sense of balance and depth.

Ambient light is not a type of light in art. Direct light, indirect light, and reflected light are the three main types of light.

Value is the term used to describe the overall pattern of light and shadow in a painting or drawing, creating a sense of depth and contrast.

Caravaggio is known for his innovative use of chiaroscuro, creating dramatic and realistic scenes with strong contrasts between light and dark.

Impasto is the term used to describe the technique of applying paint thickly to create a textured surface, adding depth and visual interest to a painting.

Vincent van Gogh is known for his expressive use of impasto, creating dynamic and textured surfaces in his paintings.