When it comes to perpetual motion machines, it is actually because he has always wanted to build Gundam, and the one that Lu Ban once made in history can fly in the sky for three days and three nights to get a wooden bird. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Lu Ban thinks that everyone knows very well that he has invented many things in his life, including a big bird that can fly in the sky for three days and three nights without landing. Hearing Gao Gao say this, Li Chen said that that kind of thing is not possible, unless there is a perpetual motion machine. Otherwise, it will land no matter what.

There is a sentence that Li Chen did not say, there is no perpetual motion machine, and it is okay to have a solar light version. That's all nonsense, though. Then Gouda asked the question of perpetual motion machines. Li Chen said that the conservation of mass and energy may not be a complete certification. Modern people, who will believe in what perpetual motion machine, the conservation of mass and energy is also common sense, unless it is a physicist, otherwise who will remember it in particular.

As for why he talked about the conservation of quality and energy, Li Chen mainly wanted to teach the children that there is no free lunch in the world, and that it is very likely that those who get something for nothing are liars, and they should pay attention to the principle of equivalent exchange, and there is no gain if you don't pay. Li Chen's ears are calloused. When Li Chen finished talking, he would disperse in a hurry.

No, we're not here to ask about that. Uncle, you said he wasn't a spell, what the hell is that? In the end, Ah Mao remembered why he was looking for Li Chen.

'Okay, uncle, let's show it, right?' Li Chen first explained the principle that the paper figure will stand, "Look carefully, there is an opening in the middle of the paper figure, put the bowl like this, use the opening to block part of the bowl, and then the key is the hand, so that you can hold the bowl." ’

Li Chen demonstrated, and then asked the children to try it themselves, 'This paper is so fragile that it will open when it is torn, why can it be supported like this?' The children shouted in amazement, and even Luo Yin was surprised.

Of course, the paper will tear and break, but try to pull it off left and right, and don't tear it. ', the child with the greatest strength, the invincible fat tiger who wrestles his wrists... When he picked up a piece of paper, he was about to tear him off, but his face was flushed, and he kept pulling.

Many things have their fragile and strong side, you can imagine it as yin and yang, the left and right sides are the yang side of the paper, and the top and bottom are the yin side. There are two sides to everything, and the sage has long told us that steel is easy to break, dripping water can penetrate stones, and it is the same to be a person and do things. ’

'Oh, uncle, don't talk about it, tell us the other mysteries.' Ah Xiang covered her ears, Uncle is this point of discussion, and he is the most crooked.

'Charm, it's nothing, I should have told you before that there are three states of things, some things have a low ignition point, and they can easily catch fire, so just apply something that is easy to catch fire. Like this, with a shake of his hand, he was on fire. ’

So, what about the piece of paper. Why does wet paper also ignite? One child asked, 'I see.' Ah Mao suddenly shouted loudly, "That's alcohol, it's alcohol, right, alcohol will ignite." ’

Of course I knew it was alcohol, but when the alcohol burned, why didn't it burn even the paper? "Because of the capillary phenomenon, we have done experiments. But then the fire went out on its own. ''This.'' Faced with this problem, Ah Mao was blind.

Because it's not just alcohol, it's water. Because there is alcohol, and if there is water, when the alcohol is burned, it will be extinguished. Li Chen solved their doubts, he rubbed Ah Mao's head again, and gave him encouragement, after all, he didn't teach in vain.

'What about the oil pot?' ''I know. This time, he hurriedly replied, "Uncle asked us to add vinegar to the oil pot first, the so-called adding oil and vinegar is this reason." All he got in exchange was a roll of his eyes.

I wanted to give you an encouragement, but if you add the last sentence to the snake, you will only have a white eye as a reward. Vinegar is right, but it's not the use of vinegar. ’

'Does anyone know why vinegar doesn't burn?' The children all lowered their heads and tried to think, Luo Yin also scratched his ears and cheeks, but he couldn't think of anything, "Is it because vinegar absorbs heat?" First of all, Ah Mao said cautiously, and when he saw Li Chen shaking his head, he began to think hard again.

I see, because vinegar has a different boiling point than oil. ''Mmmm, yes, that's the answer. Li Chen nodded in affirmation first, and then habitually wanted to touch the child's head, only to find that it was Pingdao who answered, and gave him a roll of the eyes, when I needed you just now, I didn't know where to slip away, but now it's good, I ran out again.

Seeing that he had guessed correctly, Pingdaoren was very happy to begin to show off the knowledge he had learned since he came to Li Chen. Because vinegar is added first, the boiling point of vinegar is lower than that of oil, so the vinegar boils first and begins to bubble, which looks a lot like oil boiling, but it is not so hot, so it will not burn your hands.

"What, it's all pretending to be a ghost. Ergou said very boringly, he just encouraged everyone to ask for an understanding, and he wanted to learn some spells, but now the tricks behind him have been exposed, which makes him so disappointed.

'What about the female ghost that appeared on the blank paper?' ''It's orange juice, smear it on white paper, and as soon as the fire bakes, the pattern appears. Li Chen shrugged, this is simpler, and then, without waiting for the children to ask, he revealed the final mystery, "As for the eggs." ’

'It's not difficult to get an egg, just soak it in vinegar, you can soak the eggshell softly, and then you can easily pierce it with a needle, and if you smear something black on the needle, it will be pierced into the egg. ’

It turns out that it's really all charlatans. Ergou was so disappointed, "I thought there was really some fairy or something." ''Silly boy, there are many mysteries in this world waiting for you to discover, and if you one day explore all things, maybe you can really do what only the gods can do. ’

For example, if you move mountains and seas, fly faster than a bird in the sky, swim faster than a fish in the water, and transmit sound for thousands of miles, it is up to you to discover it. Li Chen painted a big cake for them, but he didn't say empty words, if the life of the 20th century was shown in front of the modern Tang people, he would probably think it was a fairyland.

An iron car that does not need to run faster than a horse, a character who can talk in an instant and can run on a white cloth that is thousands of miles apart, which is not a fairy method, but for modern people, it is an ordinary day.

"Okay, okay, let's all go back, it's not getting early, let's get something delicious today." When it came to eating, every child swept away the feeling of being deceived and applauded.

Li Chen thought that the days after driving out the fake Taoist priest would be calmer, but who knows, not long after, another bad news came. Although it's not about the theater, it's also about him.

'What, the government wants to ban the sale of coal stoves?' (To be continued.) )