Physics class.

The more I went to the back, the more I found that the physics teacher Wu Ming was a very good thing, his class progress was frighteningly fast, and there was not much time for the midterm exam, but her class progress had reached the sixth chapter "Quality and Density". Although the students are fast, the knowledge they have mastered is very solid. At the same time, the things he talks about are often out of the curriculum, but because of the overclass, they will arouse the interest of the students...... It's outrageous.

"The quality of today's talk is actually about so much content. Because everyone is here in preview, there are so many things that need to be mastered in class. In the last ten minutes, the old rules, let's talk to you a little more extra-outlined content......"

Hearing this, some of the girls sighed slightly, and Yi Yang noticed that Ning Zhixin, who was sitting not far away, was also sighing...... Probably because every time Wu Ming talks about things that are beyond the outline, he can't understand them......

Luo Luoyue was a little excited, she said: "People who have the talent to learn physics, listening to Mr. Wu's lectures, will definitely fall in love with physics." ”

Yi Yang nodded, agreeing with this. Wu Ming talks about those things that are beyond the curriculum, which can very well cultivate students' hobby of physics.

"When it comes to quality, everyone first feels it with the standard of weight, so how heavy is it? Ten tons, one hundred thousand tons, one billion tons? What happens if it's heavy enough? ”

"This brings us to general relativity. We've learned about gravity, but there's a legacy problem with gravity, and that's over-range. That is, does the propagation of gravity need a medium? ”

"When people pull something, they need a medium, such as holding a yo-yo, and there must be a string in the middle. In fact, any force exerted on another thing in our daily life needs a medium to transmit force, so have you ever thought about whether gravity can not be seen or touched, the sun uses gravity to pull us on the earth, and there needs to be something between the earth and the sun to transmit this gravitational force? ”

This passage seems to be understood, and everyone is thinking.

"Yes, space?"

"Hmm...... Is there something we humans can't see? ”

Some teenagers answered their own perceptions. Although it was very naïve, Wu Ming was very satisfied.

Because I thought about it.

Yi Yang listened patiently, he liked Wu Ming's style of explaining things in simple terms and explaining some lofty physical principles in the most popular words...... Or rather, ability.

He probably really understands physics, and a person who doesn't know so much about physics probably can't do this.

Wu Ming smiled slightly: "At present, our science cannot find a medium for gravitational transmission. So, so this question has bothered many scientists for a while...... Well, I think it bothered you guys too. See, you're on par with the great physicists. ”

A laugh.

Wu Ming continued: "Einstein, we are familiar with Einstein, answered this question in his general theory of relativity, which believes that gravity is not a force, gravitational force is the effect of an object in a distorted space-time that deviates from a uniform linear motion. ”

In other words, Einstein believed that gravity stems from the distortion of time and space by mass.

The content suddenly became mysterious, and everyone showed surprised expressions.

At this time, the bell rang, Wu Ming smiled slightly, he didn't expect such a short period of less than ten minutes to be able to teach everyone the general theory of relativity. To put it a little selfishly, it is just that I hope that in the minds of those children who can really be interested in physics, a seed that is willing to explore physics and find answers is enough.

Every time I talk about these things, I can gain a little bit.

OK.

……

Between classes, Ning Zhixin came over and asked Yi Yang in a squirming manner: "The one you said this morning...... Does it still count? ”

Yi Yang's eyes lit up and said, "Do you agree?" ”

"Hmm...... I'll try it. ”

Yi Yang rarely showed an excited expression. But there are still some doubts, Ning Zhixin is a particularly unshowy person, so she doesn't have much confidence in recruiting her. So she said she had to think about it, and basically lost hope.

Unexpected joy, unexpected joy.

After thinking about it, Yi Yang couldn't help but ask, "Why are you suddenly willing?" ”

"Huh? It's not oh, it's not sudden. ”

"Not suddenly?"

"Actually...... I've had this idea for a long time, hey......"

"Really?"

"So, when are we going to practice?"

Yi Yang thought for a while, and shouted to the fat man not far away: "Zhang Bushou, come here." ”

Zhang Bushou came over, and the three of them stood on the edge of the balcony.

"Introduction, Zhang Bushou, his other identity, our drummer."

Ning Zhixin showed a surprised expression, "Drummer? ”

Zhang Bushou said seriously: "Yes, drummer, hand is also palm, commonly known as applause, what I am best at is retreat and drum......"

Ning Zhixin was stunned, covered her mouth and smiled, and asked Yi Yang again, "...... you Are you the lead singer? ”

Yi Yang nodded: "Lead singer and guitarist." ”

"Anyone else?"

"Not at the moment."

Ning Zhixin thought for a while: "Three people...... Well, that's fine. There's a keyboard anyway...... But I don't know how to. ”

"It's okay, there is a teacher to teach."

"And the teacher?"

"Free, it's an angel."

Zhang Bushou thought about it and said, "It's an angel, it's an angel." ”

"Angels?" Ning Zhixin laughed, strange words, it's humor.

"That's it, today happens to be Friday, and we'll go over together after school."

"OK~"

……

"This is Ning Zhixin from our class, she can play the piano." Yi Yang said.

Jiang Lili nodded, "Come in first." ”

Yi Yang naturally walked into Jiang Lili's house with a familiar car, and went to the sofa, Zhang Bushou had no heart or lungs, Yi Yang did what he did, and followed him to the sofa. But Ning Zhixin was very restrained, standing there, her eyes fluttering.

Jiang Lili brought the fruit plate and invited Ning Zhixin to sit down. Then he chatted with Yi Yang for a few words, looking like relatives.

Ning Zhixin couldn't help but feel weird in her heart, and secretly wondered if Teacher Jiang was Yi Yang's...... Sister?

She's an angel?

Zhang Bushou may be Han, and he is also a good learner at this point, his brother's sister is his sister, and he has only come once, and he is also very familiar with it.

"The Evil God"

Ning Zhixin seemed to be restless in such an unfamiliar environment, but fortunately, Jiang Lili soon turned his gaze and chatted casually, and Ning Zhixin fell in love with this gentle and gentle music teacher in class. Jiang Lili smiled and asked, "How many years have you been learning the piano?" ”

Ning Zhixin said a little embarrassed: "Hmm...... It didn't take long for me to practice when I was a child, so I was taken by my mother to practice in order to add points...... I passed the 10th grade when I was about 11 years old, but I haven't improved for a long time, and now I practice the tunes I learned in the previous exams every day......"

Zhang Bushou said in surprise: "Wow! Level 10! ”

"No...... Level 10 is almost the level of entry, or not at all. Ning Zhixin said shyly.

"No, for music students, it really doesn't make sense to talk about the exam, but if you are not a major, level 10 is still very powerful." Jiang Lili said.

Yi Yang thought that level 10 was probably the level of Jiang Lili's 8-year-old, she said.

But enough.