On this day, 63 years ago, on November 18, 1962 (October 22, 1962 in the lunar calendar), Bohr, who contributed to the atomic bomb, passed away. Niels Henrik David Bohr (1885.10.07~1962.11.18) Niels Henrik David Bohr was born on October 7, 1885 in Copenhagen, Denmark. He is one of the leading scientists of the 20th century. He first applied quantum theory, which limits the energy of a system to certain discrete values, to study atomic and molecular structure problems. In the development of quantum physics, he was a leading figure and made major contributions. From 1930 onwards, Bohr continued to work on epistemological problems arising from quantum theory, while also contributing to the new field of nuclear physics. He compared the nucleus of an atom to a droplet, and his concept of a droplet was a key means of understanding many nuclear processes, especially in 1939 in understanding the essence of nuclear fission (the splitting of a heavy nucleus into two parts of almost equal mass and releasing huge amounts of energy). Denmark was ravaged and occupied by the Germans in 1940. Faced with Nazi power, Bohr tried his best to maintain the work of his institute and maintain the integrity of Danish culture. In 1943, he was threatened with immediate arrest due to his Jewish heritage and unconcealed anti-Nazi views. Bohr, his wife and family were transported to Sweden late at night by the Danish Underground Resistance Movement (Organization) on a fishing boat. A few days later, the British government sent an unarmed Mosquito bomber to Sweden, and Bohr flew to Britain through a dramatic flight, in which he almost died. Over the next two years, Bohr and one of his sons Oger participated in the fission nuclear bomb project. Auger later inherited his father's footsteps and was a theoretical physicist. He presided over the Institute of Theoretical Physics and won the Nobel Prize in Physics. They worked in the UK for a few months before moving to the Los Alamos Research Center in New Mexico with the British research team. Bohr was particularly concerned about the terrible threat posed by atomic weapons to mankind. As early as 1944, he tried to convince British Prime Minister Churchill and U.S. President Roosevelt that these problems must be solved through international cooperation. Although this appeal was not successful, Bohr continued his efforts to propose an "open world and reasonable peace policy" in an open letter to the United Nations in 1950. Bohr believed that in order to control nuclear weapons, people and their thoughts must communicate freely. He led the promotion of the first International Conference on the Peaceful Uses of Atomic Energy held in Geneva in 1955 and helped establish the European Commission for Nuclear Research (CERN). Among the many awards he received, Bohr won the first "American Prize for Peaceful Uses of Atomic Energy" in 1957. In his later years, Bohr attempted to point out that in many aspects of human life and thought, complementary ideas may explain something. He will have a major influence on generations of physicists and play an enlightening and guiding role in their scientific thoughts and life views. Bohr himself continued to learn from all aspects, and even his youngest colleagues had an attitude of listening and learning. He has good relationships with his colleagues, his wife, his son and brothers, and he draws strength from them. His spirit is international, but he is also full Danish, deeply rooted in his Danish culture. This can be seen from the many public affairs he was responsible for, especially since he was president of the Royal Danish Academy of Sciences since 1939 and remained in charge until the end of his life. The Bohr couple