Final answer:
Edward Hopper's famous painting "Nighthawks" features four late-night diner customers, comprising three patrons and a waiter, set within an ambiance of eerie isolation.
Step-by-step explanation:
In Edward Hopper's painting "Nighthawks", there are a total of four late-night diner customers. This iconic piece, painted in 1942, creates an atmosphere of isolation and introspection, featuring three patrons and a waiter in the diner. The figures inside the diner seem to be in a state of disconnection from one another, evoking a sense of solitude.
The use of light and the green palette enhance the eeriness of the scene, with the diner's large window providing a voyeuristic view into the lives of the figures. Hopper's art often illustrates themes of modern American life and loneliness, as exemplified in this painting.