What is "Copenhagen spirit"?

? Niels Henrik David Bohr, a Danish physicist, was born in the University of Copenhagen. Since childhood, he attended a weekly family-style academic salon with his father, who was a professor, and developed a "anti-bone". When he was in primary school at the age of seven, he dared to openly point out the mistakes of textbooks and teachers. After graduating from the doctor's degree, he went to England for further study. When he met his tutor for the first time, he brought a paper criticizing his tutor and explained it in extremely unskilled English. As a result, he never got a good face from others. Fortunately, he later met Rutherford at a dinner party, and then followed Rutherford to Manchester, and his life changed.

After Bohr was employed by Copenhagen University at the age of 27, became a professor at the age of 31, was elected as an academician of Danish Academy of Sciences at the age of 32, and won the Nobel Prize in Physics at the age of 37, he transformed his "free thinking and discussion, high intellectual activity, happy and bold spirit of scientific adventure" into the famous "Copenhagen spirit". In 1921, he declined Rutherford's high-paying invitation to establish a modern physics research center in Manchester, founded the Institute of Theoretical Physics of the University of Copenhagen, and led this worldwide science center for 4 years, because he was "determined to help his country develop its own physics research".

Around Bohr, a large number of young scholars with distinctive personalities and talents were United, such as Pauli, who was famous for his vitriol, and Gamov, who told jokes with address unknown's eloquence, took drawing cartoons and writing limerick as his main business and physics research as his sideline, and many of them later won the Nobel Prize. The Copenhagen School, which was formed in this small country of Denmark, soon became the academic backbone of quantum mechanics all over the world and the object of worship in physics.

Bohr claimed to be "never afraid to show my stupidity in front of others". Bohr's popularity reached such a level that he was as famous as Einstein. You don't need an address to write to Bohr or visit him. When you arrive in Copenhagen, the postman or driver naturally knows his residence. In 1922, he was invited to give lectures in Germany, which even formed a "Bohr Festival".