The meaning is similar. The sustainable chain reaction mentioned earlier is the general working mode of a nuclear reactor. However, if you want the nuclear reactor to be controlled by humans, you cannot allow this reaction to be too intense. So how to control this reaction?
The answer lies in that neutron.
Nuclear fission uses neutrons to bombard uranium-235 atoms. When the atom breaks and generates huge energy, it will also produce two other neutrons, and these two neutrons will attack other atoms, and so on.
As one link develops, it becomes a chain reaction.
If you want to control this chain reaction, you have to control the number of neutrons. That is to say, when the broken uranium atom generates huge energy and releases two neutrons, can one of the neutrons hit it?
What if another uranium atom is neutronized, but the other neutron does not work? Nuclear experts from the 45th Institute gave Liu Fu an accurate answer at the end of 1932: It is absolutely possible.
These scientists tested countless materials and finally found a substance that could absorb neutrons: metal cadmium. They stacked a large number of graphite bricks layer by layer, among which bricks containing uranium 235 were regularly distributed.
blocks, and then insert a few metal cadmium iron rods into this large pile of graphite bricks. This is the key to controlling the number of neutrons. The graphite is used to slow down the speed of neutrons to prevent them from being too fast.
Ran away in vain.
According to the calculated quantity, when the cadmium rods are adjusted one by one, the fission reaction will become stronger and stronger until it approaches the critical value, but it cannot reach it. Once it reaches it, theoretically, the big atomic bomb will explode. Of course.
, in reality it will not happen, because there are other insurance measures, but nuclear leakage is inevitable.
With this nuclear reactor, although it is only a small experimental type, it means that Research Institute 45 has the preliminary ability to control nuclear fission. Now that fission can be controlled, it is very easy not to control fission. Of course, this is just
A theoretical inference. In fact, it is not an easy task to not control fission but to make the fission as intense as possible. There are still many detailed issues that need to be dealt with, such as how to make uranium raw materials in the fission process.
Give full play without being blown away by the energy of fission.
But no matter how difficult the details and processes are, they are only perfected with the support of theory. The theory is already there and the tests have been passed. The problems with details and processes are just a matter of time and the number of tests. In principle, the federal
The atomic bomb project has been mostly completed.
In fact, the remaining problem is not a problem of details and technology, but a problem of people. To be precise, it is how many of the nuclear technology experts in the 45 Research Institute are willing to develop nuclear science into a weapon. In this
Regarding the problem, Liu Fu could only take action in person and talk to these scientists, because the 45 Research Institute was established under his attention from beginning to end, and he also pointed out the direction for many of these scientists' research.
, so he still has a lot of say in 45 Research Institute.
In order to finally confirm the number of scientists willing to participate in nuclear weapons research, Liu Fu stayed at the 45 Research Institute on Muna Island for a full month. During this time, he talked to these scientists privately one by one, and some
He even had to talk to important people several times. Sometimes Liu Fu would look at his tongue in front of the mirror because he always felt that his tongue was forked, like a poisonous snake.
Through Liu Fu's personal efforts, 11 of the 14 project leaders of the institute are willing to participate in the development of nuclear weapons, more than 40 of the more than 70 main researchers are willing to participate, and the remaining several hundred assistant researchers Liu Fu
I didn't ask. These people didn't even have comprehensive exposure to one branch of a project. They just did some repetitive auxiliary research work and were not indispensable people.
If some people are willing to do research, while some people refuse to do so, then the institute can no longer become a unified research unit. Under Liu Fu's instruction, the federal government began to conduct research in Walai Abashi, northeastern Sulawesi.
The island began to build a specialized nuclear weapons research and manufacturing base. Of course, external
It is just an air force airport and test flight center, named the Federal Air Force Seaplane Test Base. The original 45 Research Institute specializes in studying the civilian aspects of nuclear energy. Although the confidentiality level remains unchanged, the 45 Research Institute no longer receives Liu Fu's full attention.
If it is supported, it can only be higher than other federal research institutes.
From the time the economic crisis broke out in the United States in 1929 and swept the world until the middle of 1933, the world economy was in a period of decline and turbulence. If you calculate carefully, the industrial production capacity of all developed countries with relatively widespread industrialization has dropped by nearly 10%.
By half, foreign exports dropped by nearly two-thirds, and more than 30 million people lost their jobs.
Among them, the United States is the most serious, with industrial production capacity falling by 46%, foreign trade shrinking by more than 70%, nearly 17 million unemployed people, and nearly 5,000 strikes in more than three years. Germany has also been hit hard, with industrial production capacity
dropped
40%, foreign trade has shrunk by 76%, there are more than 6 million unemployed people, and there are more than 1,000 strikes. The UK and France are slightly better, with industrial production capacity falling by more than 20%, foreign trade losing half, and about 2 to 3 million unemployed people.
.
The South China Sea Federation was the most fully prepared during this economic crisis and took preventive measures in advance, so it suffered the least losses. By 1933, the Federation's industrial production capacity had dropped by 15%, its foreign trade had shrunk by 30%, and the number of unemployed people was about 500,000. This
This was mainly due to the trade exchanges between the federal government and the government of the Republic of China, which successfully opened up a market with huge purchasing power, thereby reducing the federal domestic losses.
By 1933, countries gradually emerged from the haze of the economic crisis, but at this time, the economies of all countries in the world had been brought back to their original shape, with a total loss of 250 billion US dollars, 80 billion US dollars more than during World War I, which was equivalent to another war.
During the world war, some countries even suffered worse than the situation at the end of World War I. Therefore, governments of various countries adopted different policies to restore their own strength in response to their own situations.
The U.S. government was hurt the most, so it took action the fastest. In March 1933, the American people welcomed their 31st president, Franklin Denora Roosevelt.
The Roosevelt family is an outstanding American political family. They come from the Netherlands and are descendants of the Dutch. The ancestors of this family came to the American continent in 1649. The entire family has a history of more than 300 years in the United States.
There have been two U.S. presidents in this family. In addition to Franklin Denora Roosevelt, there is also his family uncle Theodore Roosevelt. The two presidents are more powerful than the other. This family has also produced
He has a First Lady and an Attorney General of the U.S. Congress. There are buildings and streets named after Roosevelt in many cities in the United States, and there is also an aircraft carrier, the USS Roosevelt, in the U.S. Navy.
In addition, these two presidents, uncle and nephew, are related by blood or marriage to 11 other presidents in American history. They are Washington, John Adams, Madison, John Quincy Adams, Van Buren, William Harrison, and Zachary Taylor.
Grant, Benjamin Harrison, Taft, they are even distant relatives of Churchill.
Politics and economics are often twins, and the Roosevelt family is no exception. In addition to their outstanding achievements in American politics, they have also made great achievements in the economy. In New York, from 22nd Street in Manhattan to 46th Street, and from Fifth Avenue to the Hudson
Most of He's real estate belongs to the Roosevelt family. In addition, they also invest in various countries around the world, including the Roosevelt China Investment Fund in China.
The two Presidents Roosevelt were both relatively successful presidents in American history. In later presidential selections in the United States, Franklin and Theodore won first and second place many times, leaving behind Lincoln, Washington, and Jefferson.
After death. Compared with his family uncle Theodore, Franklin was even more
With outstanding political achievements, he is the first president in the history of the United States to serve four consecutive terms, and so far the only one. He led the American people out of the economic crisis, won the Second World War, and successfully made the United States
Replaced Britain and became the most powerful country in the world. (To be continued..)
