it is because of the differences between the mirror's temperature and the air's temperature.
Steam from the shower.
When you breathe on a mirror, the moisture in your breath changes from a gas to tiny droplets of liquid on the mirror's surface. This causes the mirror to appear foggy or misty until the liquid evaporates and the mirror becomes clear again.
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.
When you blow onto a mirror, the warm, moist air from your breath creates condensation on the cool surface of the mirror. This condensation forms tiny water droplets that scatter light and cause the mirror to appear foggy.
water vapor
After taking a hot shower, the mirror in the bathroom becomes foggy due to condensation. The warm, moist air from the shower rises and comes into contact with the cooler surface of the mirror. As the warm air cools down, it loses its ability to hold moisture, leading to water vapor condensing into tiny droplets on the mirror's surface, creating a foggy appearance.
Condensation. Warm steam hits the cold mirror and the steam vapors turn back into a liquid as they are cooled. Usually gravity makes the water run down the mirror, but if it's light enough it'll stay in its position, once enough steam is converted, a droplet will form and roll down the mirror - it dissipates when the room temperature cools enough. The general 'states' are Solid > Liquid > Gas Gas > Liquid > Solid Of course, there are non-Newtonian states as well but you don't need to know that. But if you want to read up on it, Google is your friend.
the heat from the shower causes it to fog and if ur window for the bathroom is small then it takes a while for the air to escape causing the smoke to become traped to your mirror like if u blow your breath towards the mirror then it fogs and also not only your mirror gets foggy but also the floor or wall.thank u very much
When you blow air on a mirror, the warm, moist air from your breath comes into contact with the cooler surface of the mirror. This causes the water vapor in the breath to cool and condense into tiny droplets, forming a foggy layer on the mirror's surface. This phenomenon is similar to how dew forms on grass in the morning when warm air meets cooler surfaces.
foggy windows in a car, foggy mirror in a bathroom, dew forming on grass/leaves in early mornings
When you blow onto a mirror, the warm, moist air from your breath comes into contact with the cooler mirror surface. This temperature difference causes the moisture in your breath to condense into tiny droplets, creating the foggy appearance on the mirror.
Fogging a mirror with your breath occurs when moisture from your warm breath hits the cooler surface of the mirror, causing condensation to form. This effect is temporary and the foggy appearance will disappear as the moisture evaporates.