nonilluminated

Nonilluminated refers to something that does not produce or reflect light to be visible. In the context of signage, a nonilluminated sign is one that relies on ambient light for visibility. Unlike illuminated signs, which have internal or external light sources, nonilluminated signs are typically constructed from materials like plastic, metal, or wood and are designed to be seen during daylight hours or when external lighting is sufficient. Their effectiveness depends heavily on factors such as color contrast, size, font, and placement. These signs are often more cost-effective to produce and maintain than their illuminated counterparts, making them a popular choice for many applications. They are commonly found on buildings, storefronts, and directional markers where constant visibility is not a primary concern or where other light sources are available. The term can also be applied more broadly to objects or areas that are not lit, such as a nonilluminated runway at an airport during the day or a nonilluminated screen on a device when it is powered off.