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When you take a hot shower, the warm air creates humidity in the bathroom. As the steam from the shower cools down upon hitting the mirror, it condenses and forms water droplets on the cooler surface of the mirror. This is why you see drops of water on the mirror after a hot shower.
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.
It is called condensation.
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.
When you take a shower the water droplets have a greater surface area then simply having the water sit in the tub as it does in a bath. The leads to increased evaporation. With more moisture in the air it is easier for condensation to occur on a cool surface such as a mirror.
The 'fog' is condensed steam. During a hot shower, water evaporates to make steam, and when the steam comes into contact with a cold surface, such as a mirror, then it will cool down and condense back to a thin layer of water.
They form after you wash, take a shower or take a bath because the steam that comes up from the hot water rises and sticks or clings to the mirror and they gather more evaporated water as they go.
When you take a hot shower, the warm air causes the water vapor in the bathroom to condense on cooler surfaces like the mirror. The water droplets form as the vapor loses heat and changes from a gas to a liquid upon hitting the cold surface of the mirror. This is similar to how dew forms on grass in the morning.
After taking a hot shower, condensation formed on the bathroom mirror, making it difficult to see my reflection.
The energy in a bathroom shower is typically in the form of thermal energy, as the hot water carries heat energy that warms up the water and the surroundings.
Vapor condenses to form liquid. Go to the bathroom and turn on the shower but only the hot water. You'll notice that there's steam/water vapor. Look at your mirror and watch as liquid water forms.