Decisively stopping Li Tao's crazy behavior and causing the boy to return to the classroom, Huang Jingyao found three figures quickly walking out of the classroom of Class 6. The three were all boys. In the middle was a thin boy with a refreshing appearance. The appearance was not handsome but also very attractive. A tall boy on the left looked sunny and dressed brightly. The one on the right was shorter. In terms of clothing, it was the most fashionable among the three boys.●⌒,.

"Sun Minghui, what's wrong with you three?"

The young man walking among the three is Sun Minghui, and his grades are better. At the end of the period, the total score reached 631. There are more than three months left. If you work hard, you may not have no hope of hitting Peking University. The tall and handsome guy on the left of Sun Minghui is a second generation, the child of a director of Ancheng City, named Tang Hao.

The shorter one on the right is Du Anlin. His father is a relatively well-known wealthy man in Ancheng City. His family income is even richer than Lin Peng last year.

Among the three, Sun Minghui has the worst family environment and is just an ordinary rural background. However, the relationship between these three is good. They are all in the same dormitory and have adjacent seats. They are considered to be a good-looking party.

At this moment, when the three teenagers walked towards Huang Jingyao, their expressions were very excited, as if there was something happy, Huang Jingyao became curious.

"Teacher Huang, I invented a gadget, it seems pretty good."

After asking, when the three teenagers approached, Sun Minghui spoke excitedly. He said in one sentence, Huang Jingyao lit up in front of him, and he smiled and joked, "What makes you so excited?"

Sun Minghui raised his hand and showed something on his wrist that looked like a watch. However, this thing was not a watch, but a rectangular metal block in the center and an obvious slot on it.

"Teacher Huang, this guy Minghui is so amazing. He created a human charging device, which is quite practical." When Huang Jingyao looked at that thing, Sun Minghui didn't have time to explain, Tang Hao spoke excitedly on one side. He raised his hand and there was a similar thing on his wrist.

His words surprised Huang Jingyao, "Human charging device?"

"Yes, it's just using body temperature to generate electricity. We have already done experiments. I brought this temperature charger and connected to my phone. Du Anlin just took the phone in vain and started playing the same game from full range of electricity. I was charging while playing, but he just played, but my phone lasted half an hour more than him. He ran out of power in two hours, and I played for two and a half hours." Tang Hao spoke excitedly again, and the content he said made Huang Jingyao lose his speech again.

When I heard it suddenly, this thing seemed to be nothing magical. At least my first reaction was far less shocking and amazing than Wang Liang's use of his brain to control the computer.

But if you think about it carefully, this thing is really... too practical, right?

With the development of technology, smartphones are becoming more and more popular, but a new problem is enough to make all mobile phone owners trouble, that is, they consume too much power and their battery life are too depressing.

It is Huang Jingyao himself. When it comes to the festival, because there are too many calls, he often has to sit at home and charge while answering the phone.

So, this body temperature charger?

"This technology is not mature, mainly because the charging efficiency is too low, far from normal charging. If it is connected to the power supply in the dormitory, let alone persist for half an hour, there will be no problem with the battery when you keep playing. Compared to that, the gap is too big. This thing is mainly convenient, and I think it can continue to improve."

Only then did Sun Minghui smile shyly. Although he was talking about the shortcomings of his niche invention in his words, the confidence and complacent in his tone were clearly expressed.

But the other party has really proud capital for this small invention.

Recharging with the body temperature of the human body? When Huang Jingyao wanted to say something, Sun Minghui smiled again, "In fact, this concept has existed very early. It was originally a principle proposed by a physicist over 200 years. After the combination of two different materials, the difference in hot and cold at both ends will generate current. I also use the difference in body temperature and surrounding temperature to generate electricity based on that principle."

"And there are many mature technologies and products that have been developed abroad. I was interested in this at the beginning because Anlin got a flashlight from the school that uses body temperature to generate electricity a few months ago. It can still be used after the lights in the dormitory were turned off at night. That time it aroused my interest."

"But even abroad, whether it is a flashlight that generates a body temperature or a connection to charge a mobile phone, there are still many shortcomings. This principle requires a huge temperature difference to generate large electricity, such as a few dozen degrees of value, otherwise the efficiency will be terrible. It may take seventy or eighty hours to charge a mobile phone without electricity, which is too practical."

"I just refer to some finished products made by An Lin and the others. I thought of some new things and made some improvements. Now the best test is to use body temperature to generate electricity to charge a dead mobile phone, which only takes seven or eight hours to fill it up."

As soon as he spoke, Huang Jingyao's expression became strange.

It wasn't this student's explanation, he really didn't know that there were so many high-tech products outside. It wasn't this guy who came over with the finished product, he didn't know the concept of body temperature and electricity generation. But as a result, someone actually proposed a similar concept principle more than 200 years ago?

With a strange look, Huang Jingyao's heart moved again, "Physicist?"

"Yes, when I made this little thing, I involved a lot of physics knowledge. At that time, I felt like I had applied for the wrong subject. I should have chosen science at the beginning. This is also a kind of electronic engineering. I was also inspired by your advice. When I was thinking about what I was most interested in, I found it a little bit before I realized that I was actually very interested in these electronic and electrical appliances..."

Sun Minghui scratched his head awkwardly, and what he said made people speechless.

It seemed like I had chosen the wrong subject in the liberal arts and sciences? This is not worth making a fuss. How old were they when they were divided into liberal arts and sciences? Are they just interested in science and talented, or are they better at liberal arts? I guess not many of these students can clearly distinguish them.

Many students choose subjects, probably just by referring to the opinions of people around them, or by choosing randomly.

Let’s put aside this issue first, just talk about Sun Minghui’s small invention, or to be precise, only part of it was his invention, and more of it was based on the mature products outside, and it was transformed and improved on this basis.
Chapter completed!