The wooden block was tilted back at several angles, dividing the people into two groups. Pen, fun, pavilion www. biquge。 info group uses simple trigonometric functions to calculate, the other group uses experiments to do it, and the two groups do not talk to each other, only look at the results at the end.

After repeating it more than 100 times in a row, the students in the arithmetic class also joined in and calculated the error between the results of the more than 100 times as quickly as possible.

Many people took a breath of cold air, indeed, there was an error, but they also knew the simplicity of these instruments, so they couldn't help but cry out when the results of hundreds of measurements were not much different from those calculated by trigonometric functions.

"We explained the motion of the object!"

"Give me a more accurate table, give me a smoother plank, and I can calculate a more accurate reading of the force than four steps per square second!"

The cheers echoed in the courtyard of the school palace, and after cheering, these people gave an estimate based on their experience.

The acceleration exerted by the force of one ox on an object of one pound must be greater than every two seconds in four steps, but it should be between four and six steps, and the exact amount needs to be measured more precisely.

This measurement is very meaningful, because many students in the arithmetic class are going to the artillery school after completing their studies, and they know too well how many meters this seemingly one-two-step error will bring to the landing point of the cannon.

Such measurements are not only significant, but also significant, at least for war.

Jian Chen patted his head, looking at the unrecognizable unit of measurement that had been changed, thinking that all kinds of natural answers in the future may no longer be taken for granted, and it is very troublesome to need to convert.

And for those Mr. Xuegong who witnessed everything from beginning to end, they have accepted this concept in their hearts: not by Chen Jian's mouth, but by hundreds of separate calculations and measurements, they felt their majesty for the first time: give them an absolute environment, give them enough data, they can rely on arithmetic, calculate the state of motion of any object, even if it is ...... It's the sun, the glow, the Tai Sui, the moon and even ...... The whole universe.

At least, that's what it seems.

It's like a dream, in the dream you are the master of the world, you are the Pangu who opened the sky, and all the rules of this world are made by you.

In the real world, you are not Pangu, and you are not the master, but you have begun to peek into the Tao between heaven and earth.

I can't make rules, but I went and spied on them. So I can't create worlds, but I can measure worlds!

The way of heaven and earth is wonderful, but the most mysterious thing is sports!

At this point, Jian Chen simply took out the last most critical question and threw it out at one time.

As for whether the crowd can accept it or not, it doesn't matter. I don't want everyone to believe it, but only some people believe it, and I want to study it on the basis of that.

Chen Jian turned around and took out a booklet published by the Academy, this booklet he had been buying for two or three years, and it was also the first book he bought when he first came to this world.

"Ladies and gentlemen, there's an interesting piece of knowledge in this booklet, but I wonder if the author of this article is here?"

With the discussions and experiments in the past few days, no one regards Chen Jian as a fledgling child who has just entered the school palace.

Seeing Jian Chen take out the booklet, people couldn't help but be curious, and even had a slight excitement in their hearts.

Most of them had written something on it and left their names on it, but now it's a little different, and it's important to be able to be considered interesting and important by the young man in front of you.

"Well, that's another way to find the volume of a ball."

A person stood out in the crowd, about thirty years old, and said with a smile: "Is it the infinite slicing method for roundness?" That's me. ”

There was a name on it, and Jian Chen knew that this person's name was Bai Jingshuo.

Jian Chen hurriedly greeted him and said, "Mr. Bai is from Yangguan?" ”

"That's nature. The ancestral home of those surnamed Bai is out of Yangguan. ”

Jian Chen smiled a little strangely, but hurriedly said, "Sir, I really benefited a lot from this algorithm after reading it at the time. I wonder how many people present can see it? ”

This was a little ugly, and Jian Chen hurriedly explained: "I'm really not good at arithmetic, so I have a question that needs to be asked, but this question is a little difficult, so ...... Please don't blame me, I don't know the importance of being young, and I don't understand too many slick words, don't blame me. After all, I'm a stupid person, and I've been thinking about these things that seem boring to others since I was a child......"

When he said this, everyone didn't say anything, and many people were also eccentric since they were children, so this made these people have some sympathy for the same disease, and only Chen Jian's group of senior brothers and sisters held back their laughter.

At that moment, more than a dozen people stood up, and the rest of them specialized in different arts, and they even regretted that they didn't study arithmetic. Obviously, this may be an opportunity to make a name for yourself, but it is going to be snatched away by these people who study arithmetic.

It's not just as simple as understanding these dozen people who stand up, in other words, most people here can actually understand it. But what can stand up must be to weigh oneself and determine that when encountering similar problems, you can answer them in a similar way, not just understand them.

If it is the question of mechanics and mass and velocity, it is like a popular science definition that can be understood by many people; Then the problem after that is not popular science, but requires professional arithmetic knowledge, hyperbolic ellipses, and initial calculus methods to explain.

Chen Jian did learn calculus and could do the problems, but it was unrealistic for him to rearrange a set of calculus from scratch and at a level of arithmetic that was in line with this era.

This time, Jian Chen did not make big news, but still started with the simplest things.

A strip of tape, a stone, a circular motion before it was thrown out.

Circles are drawn on the coordinate system, force analysis and tangents are given, and it is evident that a centripetal force pulls so that the stone does not fly out before letting go; But the concept that will fly out in a straight line in the tangential direction after letting go.

"Gentlemen, you are proficient in arithmetic, but I am not capable of it. But according to the previous interpretation of force, assuming that the velocity of the stone is constant, and that the period of the stone making a circle on the lasso is constant, then what is the force pulling the stone towards the center of the circle? ”

"I can only use the infinite division method, which may be related to velocity and mass and radius, but I can't calculate the final relationship. Please help me. ”

Bai Jingshuo looked at the picture on the wooden board, the drawing was actually very clear, and the idea was completely correct, but it was a troublesome thing to calculate.

The relevant formulas for acceleration, force, circle, and radius were all written, and Bai Jingshuo silently calculated in his heart, nodded and said, "It should be able to be calculated, but it will take a long time." Half a month, half a month is definitely no problem. You're right, it has to do with the radius of velocity and the mass you define...... Of course, this is nonsense, force must be related to quality, but if you don't define it, it's hard to explain. ”

"Then please."

Bai Jingshuo smiled: "You won't just do such a thing, right?" I see that you still have a lot of boxes behind you, anyway, there is time, but the rest is for me to see, and it saves me an itch, doesn't it? Anyway, after half a month, I'll give you the calculated results. ”

Not only him, but many people stared at the box behind Jian Chen like a shark seeing blood.

At the beginning, the power of glass tubes and steam was used, so there was always something for the finale. Besides, that's how it was at the beginning, what will be the finale?

Chen Jian did not take it out immediately, but first used the simplest method of addition, subtraction, multiplication and division to redefine the concept of force as energy - since the force gives the object an acceleration, then in the absence of other external forces, only knowing the distance of the object's motion will also know the instantaneous velocity of the object when the force leaves, and the square of this velocity is multiplied by the mass and divided by two, which is exactly equal to the multiplication of force and distance, which is a very simple arithmetic problem, for everyone present.

It's just that there is no thermometer at this time, so it is impossible to define the problem of energy conversion, which is still a long way off. Jian Chen only uses it to distinguish between force and force, so that people can accept the concept of force, not to calculate energy, at least at this time, energy has no meaning.

Ten days later, Jian Chen took out all the things at the bottom of the box.

The broken bucket experiment and the experiment with different water pressure areas explain a common sense question: why the dam should be built with a wide bottom and a narrow top, and why people swim to the bottom of the sea and stick out their ears to crush their ears.

By the way, the idea of a hydraulic press was proposed, of course, it was just an idea, it was not realistic to use it for rolling steel, and it was feasible to use it to extract oil, as far as the current conditions were concerned.

Then a simple thermometer was shown, and the reading was inaccurate, but it was said that it was about the same, and the error was about three degrees.

And another experiment was done with a simple mercury thermometer: concentrated sulfuric acid and alcohol were made of ether at 140 degrees, and absorbed with a saturated sodium carbonate solution, because the ether was insoluble in saturated sodium carbonate, so it was layered up and down, and the ether made by this simple method stunned a dog.

What's even more amazing is that the dog woke up long after being unconscious, and Chen Jian poked it twice when it was unconscious, and the dog didn't wake up.

So the medical students were very excited, this thing can be used for anesthesia, it can be used on people, and it can be used to operate on people - but it is too expensive, and concentrated sulfuric acid is only available at Chen Jian's place, and there is no semicolon. But the medical students who have dissected so many people know that there are people who can afford it, and at least some simple surgeries can be done - such as amputation doesn't sound like hell anymore, and every amputation on the battlefield requires eight strong men to hold down their hands and feet.

The finale is something that is difficult to understand and magical in this era, but in fact the truth is very simple.

Stacks, lacquer or baked hot Eucommia gum insulated copper wires, iron bars, electromagnets.

The electric pile, charcoal rod, lacquered copper wire, and the arc light candle after the two charcoal rods are close to the hand, the current and voltage are not large, and you can't die if you touch it.

The magnet, lacquered copper turn coil, graphite brush, hand wheel, and compass move when energized, and the previous electromagnet experiment proves that the magnet can generate electricity.

The magnet, the lacquered copper turn coil with more turns, the graphite brush, the hand-cranked wheel, and the charcoal rod that was close to each other in parallel were insulated in the middle with eucommia glue -- the electric candle, which lasted for sixty seconds, was not very bright, but it blinded everyone's eyes.

It is not practical, but it can be studied side by side and developed at the same time.

At the end, Chen Jian ascended to the heights and shouted: "We will usher in a new era!" ”

The young man cheered, but he couldn't drown out the sighs of the crowd.

Many of the elders, including Mr. Mu, were both smiling and sad - Jian Chen gave them a glimpse of the future, but time cut them off hope.

There is nothing more poignant than the tragedy of seeing hope and being stifled by time.

The disciple sat left and right when he heard the sorrow, and was willing to give everything to Mr. Jiazi, and after the Jiazi year, it will be a new republican country.

But the gentlemen sighed and smiled bitterly, life and death are fateful, and Encore continues? There are no regrets in your life, and this prosperous world will be left to you young people. Although the dead soul is still there, turn into a ladder to the sky, don't forget to burn a few books when you burn paper.