"That's why I say it's a void and not a space, and a void is fundamentally different from a space, you know?" Li Chengqian glanced back at Tang Shanzhi, and then said to Gong Yihan: "Arrange someone to change it, change it according to what I said, and we will experiment again after it is changed." ”

"Why? Your Royal Highness the Crown Prince, it's not that the old minister doesn't trust your judgment, but why are you sure that you can solve the problem with such a small change? "The old man is also a person who likes to get to the bottom of things, and the lack of theory makes him only know what is going on in many things, but he doesn't know why.

This is also the reason why the public loser Han will promise Li Chengqian's family to go out of the mountain, after all, if you want to revitalize the family business, it is not enough to just eat the old capital, and you need to continue to forge ahead in order to make the family develop to a higher position.

Li Chengqian had a good impression of this studious old man, and he didn't hide it from him at the moment, patted the connecting rod and said: "Just like what Bengong just said, because of inertia." Don't underestimate this little bit of gap, it is precisely because of these gaps that these compartments and the front of the car are not on the same unit. ”

So when the front of the car moves, it is not dragging them to move together, but the front of the car moves by itself, and when the front of the car moves, even if it is only a little distance, because of its own weight, it will also produce a lot of force. This force, together with the power of the steam engine, will form an even greater force, which, when superimposed, will surely push the first carriage forward. ”

"Then because all of our connecting rods are gapped, the movement of the first carriage does not affect the subsequent carriages because it is independent."

"But after it is pushed up by the front of the locomotive, it will form a new whole with the front of the locomotive, and the weight of the locomotive plus the carriage can completely make up for part of the force consumed by the front of the locomotive to push the first carriage."

"This means that there is no attenuation of the thrust of the front of the locomotive, so it can also push the second car."

"In this way, when pushing one by one, when pushing to the fourth or fifth carriage, the combined force of the locomotive and the carriage will be greater than the thrust generated by the steam engine itself, so that the rest of the carriage is equivalent to pushing by the coherence of the previous carriages, and the steam engine only plays an auxiliary role."

Before experiencing the train experiment, Li Chengqian had never considered why the connecting hooks of those green trains in later generations had gaps, but as the first train of Datang was compared with the mature technology of later generations, he soon discovered the problem.

Then, under rational analysis, he will come to the above conclusions.

Of course, this also solved his puzzle as to why there was a certain gap at each connection point of the green car in later generations.

However, the concept of inertia is still too complicated for the Tang people, although this is a very easy to understand problem for Li Chengqian, but because the ancients did not know much about force, they could not really understand it theoretically.

So although Li Chengqian has answered in his most patient way, his husband is still confused.

But fortunately, the old man did not continue to ask, although he did not understand, but he felt that he should be able to figure out the question when he went back and pondered it slowly.

As for the others, maybe some of them understand, or they may not, but this has nothing to do with Li Chengqian, after all, he is a prince, not a teacher, and the price of wanting to learn from him is not a little bit.

In this way, Comrade Xiao Li rearranged the renovation of the train link part in the Research Agency, and recuperated in the palace for the next two days, and then came to the Train R&D Department of the Research Agency again on the third day.

This time, Tang Shanzhi and the others were very well prepared, and there were countless connecting rods with iron rings at both ends, and the size of the iron rings was different, and they wanted to use this experiment to find the best one.

"Your Highness, are you really sure? Could something go wrong? "This time, Li Chengqian came out with Li Chengqian, as well as Su Mei and Kong Wen and others.

Life in the palace was too monotonous, so Li Chengqian brought the two of them out, so that they could also open their eyes and learn about the latest technology in Datang.

"Fifty percent sure, whether it can succeed is still unknown." Li Chengqian did not give Su Mei any guarantees, because even he didn't know if he would succeed, all the previous inferences were based on theory, and whether the actual operation would succeed depended on luck.

"Are you ready? His Royal Highness the Crown Prince and the Crown Princess are watching over there. As soon as Gong Yilun finished checking the connecting rods of all the carriages, Xiao Tang appeared in front of him and asked urgently.

"Almost, if His Highness's inference is not problematic, this time it will definitely succeed." Gong Yilun is still very confident in Li Chengqian's inference, so what he said is not to shirk his responsibility, but to cheer himself up.

"So what are you waiting for, let's get started." After waiting for several days, Xiao Tang was also anxious to know what would happen to the test train this time, and whether the train would really move as Li Chengqian said.

"You'd better go and accompany my sister, I'll take care of things here." Gong Yilun was a little upset by Xiao Tang's vigorous urging, and turned around and said to Tang Shanzhi before boarding the front of the car.

During this period of time, Tang Shanzhi has shown great enthusiasm for Gongyilun's sister, even a fool can see what he thinks, and how can Xiao Gongyi be an exception. So in order to clear his ears for a while, Gong Yilun betrayed his sister without hesitation.

Waiting to see Xiao Tang leave in embarrassment, Gong Yi Lun got on the front of the car neatly, skillfully carried out various operations, and after a while, he was ready, stretched out his hand from the open window and gestured outside.

After seeing the gesture, everyone standing outside the car raised their hands one by one and covered their ears, even Li Chengqian.

As for Su Mei and the others, they had already been reminded by Li Chengqian that the speed of covering their ears was faster than him.

Inside the "Woo ......" factory, the huge air whistle roared, and under the nervous gaze of a group of people, the huge front of the car shook violently, followed by a 'bang'.

"The first quarter is moving!" My husband, who had been paying attention to the observation, lost and his eyes widened instantly.

Then there was another 'clang', and the second carriage began to move slowly, then the third, and then the fourth.......

As more and more carriages moved, everyone couldn't help but hold their breath and keep their eyes firmly on the slowly moving front of the car and the carriage.

After the sixth sound of "bang ......", the front of the car finally stopped, but there was a cheer in the crowd gathered together.

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