The old alluvium on the slightly elevated terraces is known as ________.
The dark old room was closed for a long time but once the curtains were removed slightly, the sunlight entered the room and whole of the room got illuminated. The effect by which the whole room gets illuminated is known as?
A dark old room was closed for a long time. Once the curtains were removed slightly, the sunlight entered the room and its complete path was illuminated. What is this effect termed as?