Stone Era: Restarting Civilization

Pan Changgong didn't come close, his hearing was very good, as long as he wanted to hear, he could find the sound he wanted from a lot of noisy sounds by listening carefully.

"Amber, you've always been frowning these days. I'm your sister. If you have anything on your mind, you can tell me."

The speaker is Liuli.

Amber hesitated, and then said after a while: "Sister, I just think Master Pan is a bit too much, that Amaryllis is obviously a coquettish bitch, Master Pan is such a smart person, how could he say that such a woman is bewitching and keep her by his side?" Woolen cloth?"

"So it's because of this! I'm not jealous yet, why are you jealous? Amber, could it be you?" Liuli said with a look of surprise.

"Sister, don't get me wrong, how could I fall in love with Master Pan? That's Master Pan, and he's also your sister," Amber quickly explained.

Liuli stared at Amber carefully with a meaningful expression on his face. He didn't finish the sentence, but he already understood a little bit in his heart: "Master Pan naturally has his plans, so what about an amaryllis? A great person like Master Pan, All of us are his property, and he has the final say on how to distribute it. I don’t think there is anything unreasonable.”

For primitive people like Liuli, even men and women cannot be equal. After all, as men with more physical strength, they have more advantages in gathering and hunting. Therefore, in the normal and backward era, women should be attached to men, not to mention the relationship between husband and wife. relationship.

Pan Changgong also took a deep look at Amber, and the corner of his mouth raised to reveal a "Zero Seven Seven" expectant smile.

Turn around and get back to work on making radar.

Chromium (Chrome) has discovered a gem cave in the capital area, which contains various ores

There are a lot of them, but they are always not rich, so even when the social order is normal, they are not mined, because they also cannot produce economic benefits. These surface mines, which were once scarce, are now very convenient for themselves.

To make a radar, the first thing you need to make is a screen display.

Then the display can intuitively see the status of the radar response.

The two most basic things to make a display are Sphalerite and Crystal Ore.

There are two kinds of ores, sphalerite and crystal, which happen to be collected in chrome, so there is no need to look for them specially.

The first step is to crush the sphalerite.

Then pour the crushed sphalerite powder into the Erlenmeyer flask that helps with water, and the heavier sphalerite will sink to the bottom of the cup, so that the fluorescent paint will be there.

The next step is a very common step, in short, is to use the Erlenmeyer flask to make a huge vacuum tube.

Fossil grandpa's technique is very good, he can easily do it.

After the production is successful, turn on the electricity and turn on the switch to generate a current. Like a vacuum tube, after being heated, the hot electrons rushed out will be accelerated by the action of electrodes.

Let the current in that place move a little, and an image can be presented.

Move from left to right and from top to bottom at the correct speed. This is the principle of the most primitive TV display.

Introduce voltage to the thin crystal plate, and it will vibrate, and the rhythm is quite accurate, so that the magical and brilliant crystal electric wave formed by the accurate vibration, like a sandwich, passes through the middle of the two crystal plates, and then passes through The current in the gap will become a beautiful arc, and then a regular moving line will be formed.

In this way, the radar screen display is completed.

Replace the connecting antenna with a microphone, and you can become a sonar detector in the sea.

After the radar was successfully produced, Pan Changgong immediately brought a small team to the beach and put the radar on the boat.

Throw that antenna in the sea and use it as a detection device.

It was rough and simple, and some ripples appeared on the display, which indicated that there were obstacles below, but the ripples did not move, which indicated that it was not a living thing.

Row the boat away from the coastline, and the ripples on the display screen will change, indicating that there are fish passing by underneath, and when the ripples fluctuate violently, it means that a large school of fish is passing by.

At this time, throw the supplementary fishing net into the sea, and you can harvest a lot of fish immediately.

The villagers in Gang Jingcun cheered collectively after seeing Pan Changgong go back and forth and bring back a lot of fresh sea fish.

Everyone's usual source of meat is nothing more than hunting, domesticated livestock, and fish in the sea.

Domesticated livestock also consume food if they want to grow up. At present, their food is very tight. After all, they have to feed so many people, and they have to set aside a part for wine making.

The number of domestic animals is actually not enough for thousands of people to eat meat lavishly.

But relying on hunting and fishing, they do not have modern professional equipment, and their efficiency is very low.

Usually, the sources of meat are not abundant, which is simply too bad for those who originally ate meat in modern society.

However, as far as the human body is concerned, it is impossible to die without eating meat, but it is definitely not enough to not eat vegetables. Meat can only be said to be a condiment.

Now that they have radar, they can eat as much fish as they want.

Next came the manufacture of the all-important steam-powered engine.

According to the explanation of mechanics, the steam engine actually converts thermal energy into mechanical energy.

Therefore, it can be seen that the steam cruise ship steam trains that were popular in the 1980s and 1990s had a boiler next to the steam engine, and there were special boiler workers who used shovels to shovel coal at regular intervals, threw the coal into the boiler and burned it. , can be converted into mechanical energy.

If you want to make the cruise train faster, you need to provide more heat, that is, pour more coal into the boiler. If you want to make the cruise train slower, you need to pour less coal.

As the first mechanical power device in human history, the steam engine has many scientific principles in its structure, such as knowing the problem of air pressure?

In the 16th century, humans had invented the water pump. At that time, the water pump had a defect. If you wanted to use the water pump to pump water, you could only pump water up to a height of ten meters. If you wanted to pump more, you couldn’t do it.

The famous Galileo noticed this problem and studied it carefully.

One of the conclusions drawn is that Galileo believed that the air itself also has pressure, which is the air pressure in Legendary.

The earth is full of air, so the air pressure is everywhere, acting on all objects on the earth's surface.

This is because of the existence of air pressure, so when the water pump pumps water, there is no way to draw it unlimitedly.

In addition to using heat energy, the steam engine also uses the knowledge of air pressure, using the mechanical energy formed by the combination of atmospheric pressure and heat energy to make steam move.

There are also complex and simple steam engines, such as the steam engines that drove trains and giant cruise ships in the 1980s and 1990s of human civilization. The structure is very complicated and cannot be completed by our own current technical means.

It is not impossible to make a steam engine that can drag a large wooden boat. After all, wooden boats are not of the same order of magnitude as iron train wheels, so the requirements for righteousness will naturally be lower.

The first step is to make a cylinder and a piston.

It doesn't matter if the surface of the cylinder is rough, but the inner wall must be very smooth, the smoother the better, because this will allow the piston to move faster and more smoothly in the cylinder

If you have an industrial foundation, it is actually very simple to polish the inner wall of the cylinder to a smooth appearance.

But judging from my current situation, I can only let Grandpa Fossil melt molten iron to make a cylinder, and then send a large number of people to manually polish the inner wall of the cylinder to ensure that the inner wall is smooth. iron.

After sanding successfully, put the piston in.

The next step is to find a way to pump out all the air in the cylinder so that the inside of the cylinder is in a vacuum state.

In this way, there is air pressure outside the cylinder, but there is a vacuum inside the cylinder, which can drive the air pressure outside the cylinder and press down the piston. This is a principle of using atmospheric pressure to drive a steam engine.

The key step is to know how to pump out the air in the cylinder to create a vacuum state. …

The answer is steam.

That's why this device is called a steam engine.

Connect the boiler and cylinder, and then burn coal in the boiler, the heat generated by burning coal will produce hot steam.

The hot steam will be introduced into the cylinder, and the cylinder will be filled with hot steam, which will generate a certain air pressure.

Then it is to let the hot steam in the cylinder cool down, and the hot steam will condense into liquid water.

In this way, the pressure inside will drop.

In order to balance the pressure, the atmospheric pressure outside the cylinder will press down on the piston, and this pressing down force can be converted into the force driving a giant tour or a train.

However, it can be found that after such a set of steps, the piston can only be pressed down once. If you want to form a coherent power, the weather train can run continuously for a long time. What should you do at this time?

The valve on the cylinder can be opened, and all the balanced air pressure inside can be released, allowing the piston to return to its original position.

Then close the valve, and the heat generated by the coal burning in the boiler will turn into hot steam again, all of which will be poured into the cylinder, and then let it cool down, and the pressure inside the cylinder will change. It will drive the air pressure to depress the piston again.

therefore. As long as the process is continuously cycled, the valve is continuously opened and the valve is closed, this is the most primitive operating principle of the steam engine.

Such steam engines were very popular in the 18th century.

Later, on this basis, a condenser was added to the steam engine.

In this way, the hot steam in the steam engine can be automatically cooled and condensed quickly, and there is no need to manually switch the valve. However, the production principle of the condenser is very complicated, and I don’t know it, so I don’t think about it.

In fact, there is another operating principle of the steam engine. Instead of relying on the external air pressure to push down the piston, it is conversely relying on the steam in the cylinder to push up the piston.

Two completely opposite forces, but both can produce thrust.

However, if you want to use steam to push up the piston, the principle is that the hot steam in the cylinder is filled to a certain extent and becomes a high-pressure state. At this time, the high-pressure gas will form an expansion force, and the piston can be pushed up.

However, it is necessary to ensure that the cylinder is strong enough. My current furnace is completely incomparable with modern high-temperature furnaces. The quality of the iron produced must not be comparable to modern iron.

Therefore, this kind of steam engine that pushes up the piston under high pressure is not considered to be manufactured.

After receiving his steam engine design drawing, Fossil old man seemed to be rejuvenated. With his natural craftsman's heart, he couldn't wait to start making the things needed for the steam engine. 1.4

Chromium also had a curious look on his face, and he was eager to help, and would come over from time to time to ask himself the principle of the steam engine.

Pan Changgong didn’t mean to hide his secrets. He was not opposed to the development of science, but if science wanted to develop, he couldn’t rely on himself alone. He didn’t mind telling others what he knew, and then let those interested People go to research some new tricks, and in turn tell themselves that they can improve each other.

son.

Although Chromium is a primitive man, his curiosity about science is stronger than most revived modern people, and he has a natural obsession with science, so give him some time.

It can completely reach the level comparable to modern scientists.

After all, everyone is a race that has evolved to the same level. Even modern people are not born with science, but have to learn it the day after tomorrow.

Today's chrome worships Pan Changgong very much. The original unhappy mood because of the marriage of Pan Changgong and his first love, childhood sweetheart Liuli, has long since disappeared.

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After all, Chrome and Liuli didn't have a showdown with each other, they just maintained a good impression of each other.

But now it's a done deal, both of them have broken the fantasy in their hearts, and both have their own new goals.

A few days later, Pan Changgong was discussing the production details of the steam engine with Grandpa Fossil, when suddenly a female orderly ran over in a panic.

"Master Pan, something is wrong. The people who used the radar fishing boat to go fishing reported that they received an unknown radio wave message with the radar.......