Final answer:
A silhouette is a black shape created by blocking the light when it comes from behind the subject. This lighting method is used to display the contrast of a person inside a building or to create a silhouette of a person passing between the light source and the building. It can be seen in examples like Edward Hopper's painting 'Nighthawks.'
Step-by-step explanation:
A silhouette is a black shape created when the light comes from behind the subject, causing it to block the light. This lighting method is used to display a silhouette of a person passing between the light source and the building or to show the contrast of a person inside the building. For example, in Edward Hopper's painting 'Nighthawks,' the fluorescent light flooding the diner creates silhouettes of the people inside, drawing our attention to them.