A type of fog that is formed when the ground cools rapidly by radiation of heat, often occurring in calm conditions.

विकिरण धुंध

English Usage: "Radiation fog can occur on clear, cold nights when the heat from the ground is lost rapidly."

Hindi Usage: "जब जमीन की गर्मी तेजी से खो जाती है, तो विकिरण धुंध बन सकती है।"