Fog
Watch the fog going down the valley
Press the button and watch the fog descend into the valley. The cloud is formed by liquefaction of very small particles of water vapour in air. This happens when the air is saturated with moisture and its temperature drops below the dew point - a temperature when vapour begins to condense. A cloud is a visible and clearly outlined grouping of the tiny particles of water in the air. Fog is a cloud that keeps close to the earth's surface and significantly reduces visibility. The specified limit is visibility up to 1 km.
