1 reason - the added moisture in the room
2 reason - the difference between the temperature of the water used and air is large enough to generate that effect.
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.
Temperature deviation among the steam and surface temperature on the bathroom mirrow causing condensation.
It's called condensation, steam from the hot water in the bath turns back to water when it touches the mirror covering the mirror in a thin layer of water.
Condense comes from the word "condensation". It is the process of moisture forming on a solid object from evaporated water. For example, when you take a shower, the steam is formed from water, which later is found condensed on your bathroom mirror. ~Ashton
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.
undergo the process of condensation. This occurs when the water vapor cools and loses energy, causing the molecules to come together and form liquid water droplets. Condensation can happen when steam comes into contact with a cooler surface, such as when steam from a shower condenses on a bathroom mirror.
Fog appears on bathroom mirrors like how your hot breath appears on glass when you breathe on it. The hot vapor in the air mixes with cool glass and fog appears. In other words, water vapor condenses on a smooth, cold surface creating condensation (steam).
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.
Actually, everything fogs up. You just can see it better on the mirror. When you take a hot shower, it produces steam and this steam will rise in the room and then cool off and descend to the ground. As it moves, it sticks to all solid surfaces, the walls, cieling, the sink, the toilet, etc., leaving a layer of moisture on everything. Its just more evident on the mirror or a window.
The water vapours spread all over the bathroom when we take bath. They are on the walls, on the mirror and everywhere. However they are easily visible on the mirror as the surface is smooth and water vapours make it difficult to see clearly. Taking showers creates a humid environment. The warm water vapor permeates the air. The mirror, and walls and everything else in the bathroom, are cooler than the air, and the moisture condenses on them. It is the same affect as water condensing on the side of your cold drink on a hot day. same thing when you are in the kitchen
It is called condensation.
Water vapour