daoxingyoustudent

Four classes in half a day passed happily.

get out of class was over, and amid the farewell sounds of the ducks, everyone packed up their things and returned to the studio.

By the time the last student returned the easel and drawing board, it was already 5 minutes before 12 o'clock when the door was locked. Fang Chen rushed to the faculty cafeteria, but it was empty. I quickly moved to the student cafeteria. Fortunately, there was still food.

As I was walking towards the dining area with my plate in hand, I heard a louder shout, "Teacher, teacher". I turned around and saw that it was a few students from the class just now.

Had to walk over.

Fang Chen actually wanted to eat quietly by himself.

But how can a teacher ignore the enthusiasm of his students?

Seeing that the teacher had really come, several people became even more excited. They stood up one after another and gave up their seats in the middle.

"Teacher, I have a question."

"Say." Fang Chen quickly swallowed the food in his mouth.

"Does the salting method just now have to use table salt? Is it okay to use bath salt?"

"You can use all kinds of salt, such as coarse salt, fine salt, sea salt, and the bath salt you mentioned. Each has its own effect. Generally speaking, edible salt is easy to use and has small particles, so the effect is easier to control, so I often use it. Others I’m not familiar with it. If you have time, you can experiment more and see how it works. Once you’re confident, you can use it on the screen.”

"Teacher, how do you prepare my spinach and egg drop soup?"

"The painting you painted had too much water, so you sprinkled the salt a little early. Just be careful and wait a little later next time. Although the salt-spreading method is a wet painting method, it shouldn't be too wet, right? Remember: the more the picture becomes, the more it will be wet." Wet, the larger the particles, the more diffuse the effect; the drier the picture, the smaller the particles, the more compact.”

"Teacher, can I use sugar?"

"Yes, but sugar is not as effective as salt. In addition, you can also use washing powder, sawdust, sand, cement powder, bread crumbs, etc. You can all try it. The salt spreading method is also called the absorption precipitation method, which uses a certain The water and color absorption properties of some material particles (such as sprinkles, sugar, etc.) are used to achieve some special effects in the picture. Among them, the method of spreading salt is the most convenient and the most effective. Other materials are not as good as spreading salt, so it is commonly known as spreading salt. Law."

"Teacher, I have a question and I want to ask you."

"Ask." Fang Chen quickly swallowed the food in his mouth again.

"You said in the first class that light is a kind of electromagnetic wave. Electromagnetic waves include cosmic rays, X-rays, visible light, infrared rays, etc. So, does that mean that human eyes have limitations and cannot see other electromagnetic waves? If Some creatures' eyes are stronger than human eyes, can they see more electromagnetic waves?

"Hey, what's your problem? Eat well and don't bother the teacher." The classmate on the side scolded.

"This is a good question. It shows that you have used your brain." Seeing that the child who asked the question was a little embarrassed, Fang Chen quickly encouraged him.

After thinking for a while, he continued: "For example, the eyes of nocturnal animals are stronger than human eyes. They can see infrared rays. I think every creature has eyes suitable for it to facilitate its life. If it exceeds the needs of life, The scope may be more troublesome. The so-called dark matter and dark energy studied in physics may not be felt by human senses."

After saying that, Fang Chen thought that dark matter and dark energy might be all around us, but we can't see or feel them. But I didn’t dare to say these words, what should I do if I frightened the children?

Many things are horrifying to think about.

In the afternoon, the majors held a meeting, and Teacher Yang arranged the teaching inspection work.

Teachers of all subjects are required to collect recent student homework for the purpose of teaching inspection.

Fang Chen was very confused. He had never checked like this before. Why did he change the regulations this time?

The other teachers also looked confused.

Only Chen Gaofeng, Wan Fangfang and Zhang Chunting were very active.

"Teacher Yang, are three homework assignments enough? I've already collected it!" Wan Fangfang shook her body, her face was full of color, and she raised her hand to make an OK gesture.

Teacher Yang nodded and said, "Yes, at least three homework assignments."

"No problem, OK!" Chen Gaofeng also responded.

"Don't worry, the task will be completed on time!" Zhang Chunting also promised.

Three people took the lead, and everyone agreed.

Only Fang Chen looked embarrassed. Most students' homework is taken home after it is sent back, and it is difficult to take it back.

Wan Fangfang glanced at Fang Chen from time to time. Chen Gaofeng and Zhang Chunting also looked at Fang Chen and then at Teacher Yang.

Teacher Yang spoke: "Fang Chen, is it okay?"

Everyone looked at Fang Chen.