When you turn on the hot water from the shower, some of the water escapes as water vapor. It is water that is in a gas state. When the hot gas water vapor hit's a cold surface, then it starts to cool down and collect. The collection of the water vapor in a liquid state is called condensation, and in chemistry it is a process that is used to filter many problems out of water. The water hit's all the walls in the bathroom and collects, but when you look at the wall you don't notice it. When it hit's a flat surface of a cold mirror however, since the mirror is a polished flat surface with a silver backing designed to reflect light. The image you would see when the mirror is dry is lost, because of all the condensed watter on the mirror, and it collects in a fine mist, blocking the clear view of silver behind the glass. That is the "Fog" that you spoke about.
That is because the mirror is cold and cold air cannot hold as much moisture as hot air. The hot shower increases the dew point of the room to above the mirror , and moisture condenses on it ( and other cold surfaces, but you cannot see that).
If you take a cold shower you will not see that happen. The dew point has to be higher than the mirror temperature
Part of the water vapor evaporates and atomizes in the air during bathing, when the water vapor encounters the cold mirror, it will condense into fog. You can buy a bathroom mirror with anti-fog function online, this can avoid mirror atomization and affect the use. If you are in Germany, you can try to buy a bathroom mirror on this website. >> Google search"emke online".
the steam is water. the water colects in microscopic cracks in the glass. this is what fogs up glasses
While taking hot shower, Water vapor evaporates and condenses on the mirror.. Hence forming fog
It is called condensation.
The warm, moist air coming from the shower will condense to water droplets on contact with a cool mirror or bathroom window.
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.
Bathroom tiles get wet in two different ways: water gets splashed, and water condenses, when the air is full of steam (if you are taking a hot shower, for example).
it is because when you take a warm or hot shower, then water that you are using condense it to the air & it covers the mirror of your bathroom.
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.
Because the mirror is colder water vapors are condensed on the mirror.
water energy
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
This usually happens after a hot or warm shower because the water vapour in the air becomes a liquid again. It condenses on your mirror. Condensation is taking place!
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.