Every material reacts when it heats up or when it cools down. This removes excess solder as well as flux residue before it cools down and hardens. The water vapor cools and at the dewpoint it condenses and fog forms. Because oceanic lithosphere cools and thickens as it ages, it subsides. As it is entrained, it cools and acts a heat shield for the surface layer. As lava flows downhill, its surface cools and solidifies. The water rapidly cools and solidifies the glass from the outside inward. In winter, the land cools off quickly, but the ocean maintains the heat longer. The evaporation cools the rushing air even further and accelerates it. This heats the atmosphere, but the atmosphere also cools by emitting radiation, as discussed below. This is why evaporating sweat cools the human body. The condenser cools the vapor, which liquefies. It also cools the curd due to evaporation. Following the death of a human the skin dries and cools. It cools the throat and relieves sore throat pain.