After decisively stopping Li Tao's crazy behavior, and letting this kid go back to the classroom, Huang Jingyao found that three figures quickly walked out of the sixth class classroom, the three were all boys, and the one walking in the middle was a thin and freshly dressed teenager, not handsome in appearance but also a very attractive type, a tall teenager on the left looked sunny and dressed brightly, and the one on the right was shorter, but it was the most fashionable of the three teenagers.

"Sun Minghui, what's the matter with the three of you?"

The boy who walked in the middle of the three was called Sun Minghui, and his grades were relatively good, the total score reached 631 at the end of the term, and there were still more than three months to go.

The shorter one on the right is called Du Anlin, his father is a well-known rich man in Ancheng, and his family assets are more generous than last year's Lin Peng.

Among the three, Sun Minghui has the worst family environment, and he is from an ordinary rural background, but the relationship between these three is good, they are all in the same dormitory, and the seats are also adjacent, which can be regarded as a very good relationship with the nature of a close friend.

At this moment, when the three teenagers walked to Huang Jingyao's side, their expressions were also excited, as if there was something happy, and Huang Jingyao was also curious.

"Mr. Huang, I invented a gadget, it seems to be quite good."

Under the sound of inquiry, when the three teenagers approached, Sun Minghui spoke excitedly, and Huang Jingyao's eyes lit up when he said a word, and he joked with a smile, "What makes you so excited?" ”

Sun Minghui raised his hand and showed what looked like a watch on his wrist, but it was not a watch. There is a rectangular metal block in the center. There are also noticeable slots on it.

"Teacher Huang. Minghui is so powerful, he came up with a human body charging device, which is still more practical. When Huang Jingyao looked at that thing, Sun Minghui didn't have time to explain, Tang Hao opened his mouth excitedly, and also raised his hand, and there was a similar thing on his wrist.

His words made Huang Jingyao stunned, "Human charging equipment? ”

"yes. It is to use body temperature to generate electricity, we have already done experiments, I took this body temperature charger, connected to the mobile phone, Du Anlin just held the mobile phone plainly, and started to play the same game from the full grid, I played while charging, he just played, and as a result, my mobile phone lasted half an hour longer than his. He ran out of power in two hours, and mine played for two and a half hours. Tang Hao spoke excitedly again. The content that came out also made Huang Jingyao speechless again.

At first glance, this thing doesn't seem to be magical. At least the first reaction is far less shocking and amazing than Wang Liang's use of brain thinking to control the computer.

But if you think about it, 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 cause headaches for all mobile phone owners, that is, too much power consumption and too frustrating battery life.

is Huang Jingyao himself, when it comes to the New Year's holidays, because there are too many phone calls, he often has to sit at home while charging and answering the phone.

So, this body temperature charger?

"This technology is not mature, the main reason is that the charging efficiency is too low, far less than normal charging, if it is connected to the power supply in the dormitory to charge, not to mention holding on for half an hour, there will be no power problem if you keep playing, compared to that, this gap is too big, this thing is mainly convenient, and I think it can continue to improve."

Sun Minghui smiled shyly, although he was talking about the shortcomings of his little invention, the confidence and pride in his tone could not be clearer.

But the other party's gadget really has proud capital.

Charging with human body temperature? When Huang Jingyao wanted to say something, Sun Minghui smiled again, "In fact, this concept has been around for a long time, and it originated from a principle proposed by a physicist for more than 200 years. ”

"And there are also a lot of mature technologies abroad, as well as products that have been developed, I was interested in this at the beginning, because An Lin got a flashlight from the school a few months ago that uses body temperature to generate electricity, and it can still be used after the lights go out in the dormitory at night, and that time it can be regarded as arousing my interest."

"But even if it is a foreign country, whether it is a flashlight generated by body temperature, or connected to charge a mobile phone, etc., there are still great deficiencies, this principle of power generation, often requires a great temperature difference to produce a large amount of electric energy, such as dozens of degrees, otherwise the efficiency is terrible and scary, to charge a mobile phone without power, maybe it will take seventy or eighty hours to be full, and the practicality is too poor."

"I just refer to some of the finished products that Anlin and they have made, and I have thought of some new things and made some improvements, and now the best test is to use body temperature to generate electricity to charge a dead mobile phone, and it only takes seven or eight hours to fully charge."

As soon as the words were spoken, Huang Jingyao's expression became strange.

It's not for this student to explain, he really doesn't know that there are so many high-tech products out there, and if it wasn't for this kid coming over with the finished product, he doesn't even know the concept of body temperature power generation. But as a result, someone proposed a similar concept more than 200 years ago?

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

"Yes, when I made this little thing, it involved a lot of physics knowledge, at that time I felt as if I had reported the wrong subject, I should have chosen science, this is also a kind of electronic engineering, at the beginning it was also under your encouragement, I was thinking about what I was most interested in, a little contact found out, only to be sure that I was actually very interested in these electronic and electrical things......"

Sun Minghui scratched his head in embarrassment, and the words he said were even more speechless.

It seems that I chose the wrong liberal arts and science major? It's not worth making too much fuss about, how old were they when the arts and sciences were separated? Whether they are just interested in science, talented, or better at liberal arts, it is estimated that few of these students can clearly distinguish.

Many students choose subjects, probably by referring to the opinions of those around them, or choosing them at will.

Let's put aside this problem first, and only say that Sun Minghui's small invention, or to be precise, only part of it was invented by him, and more of it was transformed and improved on this basis according to the products that have matured outside.

But whether it is an invention or a transformation, he came up with this body temperature charger, which seems to be really good, mainly because its practicality is too strong. (To be continued.) )