Bohr's Study refers to the work of Danish physicist Niels Bohr, who is best known for his model of the ATOM. His study focused on the structure of ATOMS and how they interact with each other. He proposed that ATOMS are composed of a nucleus surrounded by electrons in orbits. This model was revolutionary at the time and has since become the basis of modern atomic theory. The terms ATOMS and ATOM refer to the smallest particle of matter that can exist independently and are composed of protons, neutrons, and electrons.