When you go to work, you need to disturb your desk, and the cloth you use to wipe the desk is not very clean.

Actually, I don't know if the table is clean or the cloth is cleaner.

It's probably clean, but it's just that it's more evenly dirty.

A pot of white water, with a lot of sugar, turned into sugar water.

In fact, this topic has been waiting for a long time, it appeared in my mind a long time ago, I wanted to write it down on a whim, but I picked up the pen many times and put it down, almost hesitating, I wanted to write but didn't know what to write, which can be regarded as a hurdle for me for a long time.

I'm ready to cross over today, and I'm going to leave it at that.

When I was a child, in the spring, through the screen window, the sun shone in bunches, in that light, there were countless dust, I didn't understand when I was a child, I just felt that the original living environment was so dirty, but I couldn't help but use my hand through the light to block it; when I grew up, I studied chemistry, which seemed to be some kind of Tyndall effect, a kind of colloid.

But it seems to be far away, and the dirt is more even.

This may involve the content of "flowing water is clean" to be written later, which will be added later, cleaning the glass is not a difficult thing, especially in the case of no tools, simply use a rag.

There are probably three methods, one is to wipe with a dry cloth, relying on the friction of the rag to wipe off the dust on the surface of the glass, and the other is to use a wet cloth, relying on the water to hide dirt and dirt, but obviously, since the water takes away the filth, it will naturally become dirty water, and the dirty water will leave traces on the glass, so there is a third situation, that is, after "wiping" the glass with a wet cloth, and then wipe off the water marks with a dry rag.

To sum up, what we ask for is to use a slightly clean thing to share its dirtiness, and the two phases are equalized, so as to achieve the purpose of cleanliness.

In the case of glass cleaning, what we need is a clean rag and water to share the dirt on the glass, knowing that the rag or water and glass are balanced.

Of course, we will think that sometimes when we encounter this situation, a thing is very dirty, we can wipe it very clean with a rag, but the rag becomes very dirty, is this called transfer or average?

The big one is called uniform, the small one can be transferred, the big one is based on the environment, and the small one is based on two things.

All in all, what I did write didn't put me at ease, so I had to skip it for the time being.