Let Huan'er take a handful of printed plastic combs out, then tear up a small piece of paper, and then comb it on his head a few times, put it near the confetti, and soon the confetti will be sucked up, everyone is surprised, Li Xiang said that this is electricity. Pen? Interesting? Pavilion wWw. ｂiquge。 info Li Xiang nodded honestly when he saw everyone, as if to say, it turns out that this is electricity! However, Li Xiang couldn't see from their eyes that he understood what electricity was, he was so angry, he didn't understand it, he pretended to understand, hey! Cursing a few words angrily in his heart, Li Xiang gave up, he couldn't even fool himself, let alone them, this one didn't show the most significant characteristics of electricity at all!

Suddenly remembered something: "Huan'er, you go get a flashlight!" ”

Huan'er has a bitter face, what! If you can't tell yourself, you can be angry with me! However, she still obediently took out a flashlight.

Li Xiang pointed to the shiny light bulb and saw that there was no, this is electricity, and one of the biggest uses of electricity is to shine、、! The vicious tone made Zhao Er and the others dare not come up! In the end, Zhao Si was bolder, worshiped for a while in front of the flashlight, and finally asked weakly, "Can I touch that electricity?" ”

Li Xiang rolled his eyes, touching electricity? You go catch the lightning and see if it electrocutes you" You can't touch the electricity, the flashlight is OK, and then! "Li Xiang threw it to Zhao San, Zhao San is really useless, he actually dodged it, it's really uncultured! Can a flashlight electrocute a person? Flashlights can only kill people!

When the curious guy finally shifted his attention from the flashlight to Li Xiang, Li Xiang began to explain the content of electricity on the stone floor, it seems that the construction of a cement factory is not so easy, electricity is needed, and a group of skilled workers are needed!

"You say apples can generate electricity, too?" Even Miss Yuya didn't believe it, so there was a spectacular scene in front of her, with a long string of apples lined up on the ground. In order to reduce the resistance, Li Xiang used silver wire as a wire, which is really a luxury, and finally, after connecting 23 apples in series, the bulb removed from the flashlight finally emitted a faint light! Li Xiang wiped the sweat from his forehead, it was really hanging! Almost failed on the first attempt! However, Li Xiang still has a sense of accomplishment for the results of his efforts!

Zhao Er and the others no longer cowered, and actively participated, and soon the light bulb lit up, which was much better than what fruit battery they had worked so hard to get. After comprehending his electromagnetic principle, under the leadership of Huan'er, even a simple hand-cranked generator was made, and Li Xiang felt that he should withdraw from this world of young people......

The Zhao brothers seem to have finally found the direction of their lives, and they plunged into the study of "electricity" with enthusiasm! Since this class, these guys who know martial arts have been hiding in the house for three days and have not come out!

"Then can you leave this cement-making business to me?" Zhao Si asked with a red face, seeing Li Xiang looking at him questioningly.

Of course, now we have to test it first, and it will be fired on a small scale! Fortunately, Li Xiang has a super 3D printer in his body, which not only has relevant information about the cement production process, but also can print some equipment. Therefore, as long as the process and formula given by the information are followed, it is not a big problem to hand it over to Zhao Si.

Li Xiang thought to himself, anyway, he didn't have time to manage the cement production matter, so he must hand it over to someone, since Zhao Si was so active, it would be a good choice! But I still have to test him, after all, it is not easy to come by, and I will cherish my efforts even more! Besides, personal ability is also very important, although Li Xiang does not doubt Zhao Si's talent in this aspect, but he still seriously explained that he wrote a report on the production of the entire cement, and the production of this cement was officially handed over to him after he was satisfied!

Zhao Si's cement report was finally delivered three days later, and when Li Xiang saw the so-called experiment report for the first time, it was instantly messy! This is not a terrorist threatening letter, the words in the report are large and small, crooked, just like the words cut and pasted from various advertising newspapers in the threatening letter! This content, Li Xiang read the first page as if he was eating a smile and half a step, and he really couldn't move:

Test time: five years of Da Song Baoyou

Test site: high stone ladder cave

Test characters: Zhao Si, Li Erniu, Wang Mazi, Zhang Maozi......

The purpose of the test: to make cement

Test principle: the stone and clay are crushed, sifted, and the fine grains are mixed and burned in the kiln, and then the burned stone and soil are crushed into powder.

Test record: On May 7 of the fifth year of the Great Song Dynasty Baoyou, the first kiln cement was out of the kiln, and it was identified as a stone by Lord Li.

On May 7 of the fifth year of the Great Song Dynasty, the ratio of stone and clay was adjusted to 10 parts of stone and 9 parts of clay, and the cement of the second kiln was out of the kiln, which was identified as a failure by Lord Li.

……

At noon on May 8 in the fifth year of the Great Song Dynasty Baoyou, the sixth kiln cement test, adjusted the ratio of stone and clay 10 parts stone and 5 parts clay again, and took a sample for identification at each incense time, and tested it according to the method explained by Lord Li, and the test result: cement and water are mixed and still cannot solidify!

……

On May 10 of the fifth year of the Great Song Baoyou,...... The cement of the eleventh kiln is out of the kiln, and it solidifies after two hours after adding water and stirring, but it is easy to disperse.

……

On May 11, the fifth year of the Great Song Dynasty Baoyou, the stone in the clay ratio of 10 parts of the stone 3 and a half parts of clay, the calcination time is 3 hours, the temperature is dark red fire for one hour, the yellow fire for one and a half hours, the dark red fire for half an hour, the twenty-seventh kiln cement out of the kiln, after adding water to the half an hour of solidification, and very hard, after adding the sand and stone wall strength is higher than the glutinous rice wall, the preliminary judgment is the cement that adults say.

Results: Cement

After reading this very non-standard experimental report with the mentality of watching jokes, Li Xiang sighed very much, this is the first experimental report written by the ancients in a modern way, if possible, this will be recorded in the long river of history, maybe a few years later, it will be an epoch-making symbol, for later generations of historians, the historical significance it represents is immeasurable.

This report was obviously written under the guidance of Yu Ya, otherwise Li Xiang would not believe that Zhao Si still had this level! Squinting at the report in his hand, he suddenly felt unusually load-bearing, history is no longer running according to its original trajectory, whatever......

Li Xiang closed his eyes, gently tapped on the table, and calculated in his heart, but now there are several problems in this report that urgently need to be solved: the first is the expression of time, although there is now a relatively systematic expression of time, but it is too inaccurate, how long is a stick of incense, and the incense is still long and short, not only as thin as a bamboo stick but also as thick as a thigh......

The second is the expression of temperature, how many degrees Celsius is the dark red fire? How many degrees Celsius is a yellow fire? That's too general! Although experience is important, this experience must be based on accurate data to be safe!

Again, professional knowledge needs to be strengthened, what kind of stone, that's called limestone! The corresponding knowledge should still be popularized, otherwise if you don't know why it is, then the worker will never become an engineer, and how can there be progress and innovation in the process?

Then there is the power, the crushing and grinding of limestone must be mechanical equipment, and now it seems that only a batch can be printed with a super 3D printer, as for the future branch factory, you have to wait until the degree of industrialization increases. (To be continued.) )