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North korea like complete controlled and off from society outside get out only one “exodus” no also a human will power, scientist understanding and indomitable adventurous combination is. year 2023in made up one amazing in the event, one of family two brothers, their wives and the children approximately ten year till Racheli of the plan based on yellow sea (Yellow Sea) across do it south korea to reach unbelievable adventure did. this story only emotional no, also science and Technology subtle from use creature to save alive laboratory is.

this thing north koreaIt belongs to a family living in the interior area. His life continued in an urban area away from the sea. Father used to do business of coals and antiques. Life went on as usual. But the father realized that the future in this system was limited. This world is not as small as it seems. Then he made a long plan that seemed impossible. The plan was to keep moving from North Korea to another country. There was only one country next door and that south korea Was. For this “Great Escape” he chose the sea route. The father explained to his son that it would be very dangerous if we went by land. The border of China, the strict vigil of the army and the possibility of getting caught is very high. In contrast, rivers are dangerous but can be crossed.

The army also lost confidence

First of all, father asked his younger brother to go to the coast and learn fishing. He went to the coast for four-five years and learned fishing and built his own network. Nanabhai also got a boat for fishing. This entire process was not just for employment but was also the basis for future migration. After that the elder brother was also called there. As time passed, both of them got married and their family also progressed. Every day he would go deep into the sea on the pretext of fishing. Every day, he used to closely observe the direction of wind of sea currents, what kind of situation is created when there is a storm in the sea, in which direction the sea water flows when there is a storm in the sea. While all this work was being done, military patrol boats would also come to investigate. Both brothers also studied the patrolling time of the army. Now even the army is convinced that these people come for fishing. Due to this belief, both the brothers used to take a boat to reach the sea border. After three-four years of experience, due to the human brain’s ability like ‘pattern memory’ and ‘spatial memory’, they became able to remember the specific path, time and situation and use it at the right time.

the family expanded

Along with studying the environment, the two brothers also started investigating which technological instruments the army uses to keep an eye on enemies and illegal activities while patrolling. Also learned how these equipments work. Both the brothers got settled in the house situated on the sea shore, hence father and other sisters also left their native place and came to live here. Both the brothers got married and had a son. Thus, there were total eight members in the house.

Why kept the boat’s speed low?

Stars in the sky not only produce light but also produce different types of frequencies. Astronomers measure the intensity of this frequency with the help of radio telescopes. If the intensity of this frequency increases with time then it is proved that the star is coming closer and if its intensity decreases then it is proved that the star is moving away. Apart from this, how fast the stars move can also be known due to the change in frequency. Apart from this, many times the distance and speed of movement can be measured based on the time taken by the frequency transmitted from the earth and reflected back. In scientific language it is called “Doppler effect”. This method is also used to know the speed and direction of an aircraft, ship or boat moving in the sea. After extensive study, both the brothers realized that if the boat moves fast, this change is clearly visible, but if the boat moves at a speed of only three to five kilometers per hour, then this change is so small that the radar considers it as a “stable” or “tensional object”. Using this principle, the family kept the speed of their boat very low, so that they became almost invisible to radar.

in-depth study of each factor

To achieve freedom, he did a very detailed scientific study on every factor affecting his freedom so that he would not be caught under any circumstances. He also observed that not only speed but also sound can be a danger. A normal boat engine produces 80 to 100 decibels of sound. So he reduced the noise by changing the muffler system of the engine. By doing this, the sound of the patrolling fighter boat will not be controlled even if it is close to it. This process is called sound attenuation and acoustic damping. He released the engine’s exhaust underwater, because water absorbs sound quickly. Additionally, to prevent the engine noise (sound waves) from spreading far and wide and being absorbed here and there, stones were placed all around the fishing net in the boat. The children were also kept in cages with nets. Due to all these structures, the noise produced in the engine gets absorbed in the trap and the cavity.

Meteorology also became important here. During a storm, moisture in the air and droplets of rain increase, which absorbs and scatters radar waves. This is called radar attenuation. Therefore, choosing the night of storm was a risky but scientifically correct decision. In this situation, the efficiency of the radar system decreases and it becomes more difficult to detect small boats. The most dangerous part was on the ground. Women had memorized a safe route for years. They could recognize small marks of land visible very far away.

Before this mission is accomplished…

This is a great example of pattern recognition. One wrong step could be life-ending, but these brain abilities carried them safely through. After entering the ocean, they made limited use of GPS for navigation. But mainly adopted dead reckoning method. In which the location is estimated based on direction, speed and time. If the boat travels for 2 hours at a speed of 5 km/h, it will be counted as having traveled a distance of 10 km. This simple calculation became a lifesaver. They also took into account the ocean currents, so that the route could be more precise. There was also another reason for keeping the speed of the boat low in order to escape from the country. A new member was to be born in the family of eight. Elder brother’s wife was pregnant. Before this mission could be accomplished, a tragic incident happened in the family. His father, who had conceived the idea of ​​the “Great Escape”, passed away. His father had planted the seed of thought in the children so strongly that this plan continued as before.

What will happen if we get caught?

During this entire journey, there was a constant churning going on in my mind. “Is this the right decision?”, “What will happen if I get caught?”, “Am I putting my family in danger or saving it?” My mind was troubled with these questions. But on the other hand there was a strong thought that “What will we get if we stay here?” The glimpse of the outside world, especially the lifestyle of South Korea, sowed the seeds of hope in his mind. This hope became bigger than fear. If there is one thought in the family then any impossible journey can be overcome.

armed navy captured

At last a moment came when what was not supposed to happen happened. When they crossed the Northern Limit Line and entered South Korean waters, the soldiers of the armed naval boat asked, “Why have you come here, is your engine broken?” Death was visible in the storm and dark night. Then he replied, “No, we have run away.” Years of preparation, pain and hope were summed up in these words. His plan succeeded. South Korean soldiers took him to their country. Gave shelter.

But the end of this story is not just filled with happiness. The brother who had made this entire plan died in an accident just 19 months later. This incident reminds us that life is uncertain, but efforts never lose meaning. Today this family is living a new life in South Korea. Hot water, light-filled homes and freedom.

This story gives us a deep message: Science is useful not only in the laboratory, but also in life. Information brings revolution in the mind. And hope is the greatest power, which can make the impossible possible. Perhaps even today someone somewhere might be sitting in the darkness and wondering, “Will I too be able to reach the light one day?”