because the moisture in the air attracts to the coldness on the mirror
A bathroom mirror gets fogged up after a shower because the warm, moist air in the bathroom condenses on the cooler mirror surface. This condensation forms tiny water droplets on the mirror, creating the foggy appearance.
because of condensation
When (i) all four of the little guy's feet are pointing toward the sky and (ii) a mirror held up to his little nose doesn't become fogged, he's probably sick.
When you hold a mirror in steam, the mirror's surface becomes fogged up due to the condensation of water vapor. This occurs because the steam contains water droplets that stick to the mirror's cooler surface, creating a thin layer of liquid that obstructs reflection.
When you blow on a mirror, the warm air from your breath does not create a visible effect on the mirror. However, if the mirror is fogged up from steam or moisture, blowing on it can help clear the fog and reveal the reflection underneath.
When you take a hot shower, the warm water evaporates and rises into the air. When this warm air comes into contact with the colder surface of the bathroom mirror, it condenses and forms water droplets, creating fog on the mirror.
Cold air holds less moisture than warm air. When you run the shower with hot water, the moisture condenses on the cold mirror surface causing it to fog up. If you run the shower cold, the mirror will not fog up.
The message appears because the oils on your finger causes the condensation to form at different temperatures than uncoated glass. To "erase" a message, wash the mirror with Windex.
As the wind would agitate the surface, reflected light would be diffuse (similar in effect to a fogged mirror), and no clear reflection would be apparent.
By increasing its radius of curvature to infinity.
Full House - 1987 Fogged In 2-12 is rated/received certificates of: Australia:G
Full House - 1987 Fogged In 2-12 was released on: USA: 20 January 1989