You may remember a theorem from junior high school physics: Water vapor condenses when it's cold, which is the root cause of the foggy bathroom mirror. When water vapor encounters a cryogenic bathroom mirror, it condenses on the surface as a layer of water mist (which can be understood as small water droplets), making the surface diffuse and unable to reflect properly, making it impossible to use the bathroom mirror properly.
The water temperature of the bathtub is roughly the same as the body temperature, between 35℃ and 40℃. The surface temperature of the bathroom mirror is slightly below room temperature. Wet air after bath + big is the bathroom mirror fog two necessary conditions.
As a result of winter room temperature is inferior, the temperature difference between bathroom mirror and air is larger, because this fog is thicker, the time of fog nature dissipates is longer.
1. The principle of fogging and anti-fogging in the market
According to the reasons for fog in the bathroom mirror, we can analyze how to avoid fog:
Principle 1: Reduce air humidity;
Principle 2: reduce the temperature difference between steam and bathroom mirror (improve the surface temperature of the bathroom mirror);
Principle 3: Fog cannot form on the surface of a bathroom mirror.
Keep these three principles in mind. Almost everything on the market comes from them.
2. Fogging and anti-fogging methods
▲ The effective method of defogging is to electrically heat the mirror itself to reduce the temperature difference. Heating the mirror prevents fog when there is no fog, and removes fog when there is fog. The speed of the pressure reducer is related to the heating power. However, it should be noted that excessive heating power and rapid temperature change may lead to mirror fracture and other problems.
▲ It should also be noted that when purchasing such electric toilet appliances, there must be leakage protection. It's very dangerous if you touch the switch with water.
In fact, frankly, there is no technical talk about this feature. As long as the mirror can be heated quickly under the condition of ensuring safety, we should pay attention to safety and other aspects when purchasing.
In theory, the coating has anti-fog, anti-fouling and anti-static effects by forming microporous fog layer. It feels like the glint is much more than it actually is, and most of these coatings don't last very long.
If you choose this anti-fogging coating, you must really try it before buying, and you should conduct comparative tests, such as comparing coated and uncoated coatings, to see if it works (after all, there are some practical effects on the market).
This principle is similar to eye anti-fogging agent and car glass anti-fogging agent, similar products can also be used generally.
One is to stick to the surface of the mirror according to physics. Film surface has hydrophilic, so that the bathroom mirror evenly formed water film, no mist, is to achieve anti-fog effect (such as car glass film). The product is rare and the effect is so pervasive that it can be ignored.
There is also a fog-proof film that can be opened and glued to the back of the mirror. This works the same way as electrically heating a bathroom mirror. It can be heated to eliminate fog to reduce temperature differences. This is one possible way to remodel and upgrade your bathroom mirror.
Just like the anti-fogging coating, you have to try it out for yourself and decide whether to use it or not once you see it in action.
▲ Similar to car wipers, it can directly wipe off the fog layer. The disadvantages are that you have to do it yourself, the erasure area is limited, and the erasure layer is likely to be uneven, which may slightly affect the normal use of the mirror.
Still have the method of a few folk: on the surface of bathroom mirror besmear scour, effective time is short, troublesome; Electric hair dryer blowing, although using principle 1 to reduce the temperature difference, it is effective, but! I've done this eight times! Wait, watch the cloth you wipe off. You can't lose your hair. Sticking a mirror is also a hassle
