please list of contribution of neils bohr

Niels Bohr was a Danish physicist who made significant contributions to the understanding of atomic structure and quantum theory that would revolutionize physics. He was the first to propose the idea of the atomic nucleus and postulated the atomic model. He also developed the Bohr model of the atom, which states that electrons orbit around the nucleus in specific energy levels. This model has been used to explain many properties of atoms, including the periodic table of elements. In addition to his work on atomic structure and quantum theory, Niels Bohr made other important contributions to physics. He developed the principle of complementarity, which states that certain properties of a particle can only be observed in certain circumstances. This principle has been used to explain phenomena such as wave-particle duality. He also proposed the liquid drop model of the nucleus, which explains the behavior of atomic nuclei. Niels Bohr was awarded the Nobel Prize in Physics in 1922 for his work on the structure of atoms and the quantum theory of radiation. He was also awarded the Matteucci Medal in 1926 and the Franklin Medal in 1936. Fun Fact: Niels Bohr once won a Nobel Prize for a bet he made with his friend. He bet that he could explain why the sun shines, and he won the Nobel Prize for his explanation of nuclear fusion.