Search This Blog

Sunday, February 8, 2015

How does ice form on a window pane in winter?

Its is related to "relative humidity", which is a measure of the amount of actual water vapor in the air compared to the maximum amount of water vapor the air can hold at a particular temperature. Warmer air can support more water vapor than cold air. As warm air comes in contact with a cold window pane, it's temperature is lowered and the water vapor that it can no longer hold condenses. If the temperature of the pane is below 0°C (32°F). that water freezes to become ice on the window pane.