Korea South 2017 "Science in Korea (3rd)" 3v Set

The Korea Post will select King Jungsejong, Choi Moo-sun, and Woo Jang-chun, who have been listed in the Science and Technology Hall of Fame, and issue the third series of people who have contributed to Korea's development of science and technology as stamps.

 

King Sejong (1397-1450) established the promotion of science and technology as a national governing ideology and developed Korean science and technology to a high level in various fields such as astronomy, geography, printing, defense, medicine, and agriculture. 

It compiled the inside and outside of Chiljeongsan Mountain, which established a Joseon-centered paradoxical system, and developed a rain gauge, a water clock and sea clock, and an astronomical observation organization called Honcheon. 

In addition, the gun was independently improved and invented to strengthen its defense power. 

He also took care of the lives of the people by working hard on medical research and development of domestic medicines, and greatly contributed to the development of culture by reorganizing musical instruments with our technology. Hunminjeongeum, created for the people who do not know writing, is recognized as a scientific character unique to our people. 

Choi Mu-seon (1325-1395) was the first general and scientist in Korea to make gunpowder and develop gunpowder weapons in the late Goryeo Dynasty.

Thinking gunpowder was the best to defeat Japanese pirates, he learned how to make salt from Chinese engineer Yi Won and succeeded in developing gunpowder after long research and effort. Since then, he has established a sense of fire to develop various gunpowder weapons such as guns and cannons. 

The gunpowder and weapons developed in this way contributed greatly to the reinforcement of Joseon's military power after defeating Japanese pirates that invaded the coastal area of Jeolla-do in 1380. 

Woo Jang-chun (1898-1959) was a scientist who contributed to Korea's food self-sufficiency and greatly contributed to the development of world genetic sarcoma. In 1935, Woo Jang-chun broke the academic theory that only the same species could be bred, and surprised the world's breeding academia by experimenting with the synthesis theory of species that crossbreeding plants in the same genus could create new plants. 

It also contributed greatly to realizing food self-sufficiency by disseminating tangerine cultivation technology to Jeju Island and developing Korean cabbage, radish, and Gangwon-do potatoes that grow well in barren land.

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