Electricity is a necessity for human beings, modern life computers, mobile phones, air conditioners, televisions, etc., all electrical appliances need electricity, simply put, there is no electricity, just like a waste cat. Pen ~ fun ~ pavilion www.biquge.info

In simple terms, electricity is a property of the repulsion and attraction that arises between subatomic particles like electrons and protons.

How do we have the impression that we can get electricity?

In the beginning, fossil fuel power generation was generated, but fossil fuels can no longer grow resources, so there are hydropower, solar energy, wind energy, geothermal energy, nuclear energy, ocean energy and even manpower generation points.

There are many ways to do this, but none of them are generated from fruit, or something completely nonsensical like fruit and cola.

So Coach Tang concluded: "It's impossible to charge the phone by doing this!"

Jack nodded very approvingly, in this nonsensical way, it is better to wait for the thunder and lightning in the sky.

Han Shi didn't care so much, after finishing all the preparations, he said to Xiao Yi: "Give me your mobile phone." ”

Xiao Yi handed over the phone in a daze, and then Han Shi plugged in the data cable, connected the plug and plugged it into the watermelon.

And then......

The scene exploded.

"Huh? Is my eyes glazed? Or my glasses are glazed and really charged. ”

"It's not scientific, it's really not scientific!!"

"Is there a great god who can tell me how this was done?"

"I just want to say, senior brother, you are too v587. ”

"The three views are ruined, what is the situation with this Nima. ”

They saw with their own eyes that Xiao Yi's mobile phone, which was originally out of battery, was plugged in with watermelon, and it was: 1% of it was charged, which was a supernatural event.

There was a lot of discussion, and the students didn't know about it, they must have subconsciously asked the teacher, and it happened that the teacher was next to him, so the language king suffered multiple attacks.

"Teacher, what's going on?"

"Why can Mr. Wang use a few fruits to generate electricity?

"Add cola, lemon juice and salt to it, these are all things that must be added?

The language king said that he was psychologically miserable, he was a teacher of liberal arts, why did he ask him such a science question.

Well, the liberal arts and sciences are not the key, the key problem is that he doesn't know this either.

Even more confused are Coach Tang and Jack, who just asserted that it would definitely be impossible to charge, and now their expressions are similar to seeing a ghost, they can't believe their eyes, they wiped them and looked at them again, but the phone is really charging.

The two looked at each other, their eyes were so wide that their jaws were really about to fall.

"Charged?"

"You can charge it with fruit?!"

Everyone looked at Han Shi, hoping that Han Shi would explain and explain, but unfortunately, like before, Han Shi didn't like to explain what he had done.

"I see, it's fruit acid, it's fruit acid. The math teacher Liu finally figured it out, and after an exclamation, everyone's eyes looked at him

"I explain in simple language. Mathematics Liu organized the language, and then said: "The electrochemical activity of the two metals is different, in this case copper wire and iron nails, the more active metal can replace the hydrogen ions of the acidic substances in the fruit, and the whole system needs to be stable due to the positive charge." ”

Well...... This simple statement is really simple, and few people can understand it.

I can only listen vaguely, anyway, hydrogen ions are extracted from fruits, and the relationship between hydrogen ions and electric charge is needless to say.

Mathematics Liu went on to explain: "So in the case of forming a galvanic battery, the system is stabilized by electrons from the circuit, and the mobile phone can naturally be charged. ”

"Then why add salt, cola, lemon, and so on?" one student asked.

"Because this fruit is charged, the amount of current directly depends on the concentration of fruit acid, whether it is orange or lemon is a fruit with a lot of fruit acid, and cola is also a carbonated drink. Math Liu finished explaining.

It turns out that such a small charging method has such a big science in it.

Well, it's not unscientific, it's too scientific.

"Senior brother, you scumbag is disguised, at least in chemistry, this Nima. ”

“…… I've already written down this method, and I'm going to copy it and take it back, and I'll play it in front of my junior next year. ”

"You are too treacherous, how can you be like this, but pretending to be forced in this line of work is really broad and profound, there are people outside the world. ”

"I can think of this way, and there is no one left. ”

……

Coach Tang and Jack have similar ideas to the students, and this method can also be come up with?!

"Now I believe that the ghost story last night was the student's own thoughts, this reflex is too perverted. ”

"I agree with it!"

Calculate the price of small fans, watermelons, lemons, and oranges, and it is better to buy a charger, so it is also suitable for emergency response.

"Thank you, thank you, thank you. Jiao Yan thanked again and again.

Han Shi snorted, looked at the book, and did not look up.

The problem was solved, and at noon ate the barbecue that was not eaten yesterday, and everyone began to pack up.

To be precise, everyone is except for Ma Jundong and Han Shi, the two of them are very leisurely, and they don't know where to find a pair of backgammon and start playing.

After about an hour, it was almost finished, and the garbage was also cleaned up.

"I had a pretty good time, except for the ghost story of my brother. ”

"Next time, we'll make an appointment and we'll camp by ourselves. ”

"Camping is much more fun than going to an amusement park or something. ”

"That's right. ”

"The things that I bake myself are really much better than the things outside, and it seems that I am also very talented in barbecuing. ”

……

This semester's camping activities have been quite successful, at least so that students can still have endless memories after the end.

Han Shi has a lot of things, anyway, after the school assembly, when he returned to the community, he saw that there were still many reporters squatting, these reporters were really hard, I don't know how long they have been squatting here.

So the kind-hearted Han Shi, in order to reward these reporters, gently came in through the side door.

Otherwise, let them know that they have been squatting for a day or two, but in fact no one is at home, think about how embarrassing it is.

"Han Shi is back, do I boil mung bean soup and drink it?" Sister Wang said.

"Don't drink"

Han Shi went back to the bedroom, huh...... The first thing is to stand in front of the floor-to-ceiling mirror, after all, even in the past few days of camping, Han Shi has insisted on exercising.

The abdominal muscles became more and more obvious, and Han Shi nodded with satisfaction, which was a good sign.

After taking a shower, Han Shi turned on the computer, and he thought of a mistake he made. (To be continued.) )