Niels Bohr
Particle physicists. or Quantum Physicists or Atomic Physicists
Niels Bohr propose a planetary model for the atomic nucleus.
its was Ernest Rutherford who proposed the planetary atomic model
Any theory which involves things orbiting round a central object. Such as the early theory of atomic structure.
Niels Bohr developed the concept of the planetary atom in order to explain the behavior of electrons in atoms. He proposed that electrons orbit the nucleus in specific energy levels, and that they could jump between these levels by absorbing or emitting energy. This model helped to provide a more accurate explanation of atomic structure and the behavior of electrons.
Niels Bohr's major contribution to atomic theory was his development of the Bohr model, which described the structure of the atom with electrons orbiting the nucleus in discrete energy levels. This model helped explain the stability of atoms and the spectral lines observed in their emission or absorption of light. Bohr's work laid the foundation for modern quantum theory and the understanding of atomic structure.
The scientist who first postulated the theory of atomic structure was John Dalton. He proposed his atomic theory in the early 19th century, suggesting that elements are composed of indivisible particles called atoms.
Physicists and Engineers
Atomic physicists do not fully understand why all atomic particles stay together within an atom because the forces that hold them together, such as the strong nuclear force, are complex and not yet fully understood.
Nuclear physicists and engineers are primarily responsible for designing and creating atomic bombs. These scientists study the behavior of atomic nuclei and develop the technology needed to release the energy stored within them for destructive purposes.
The "raisin-in-a-bun" model, which describes the structure of an atom, was proposed by the British scientist J.J. Thomson in 1904. This model suggested that atoms consist of a positively charged "bun" with negatively charged electrons (the "raisins") embedded within it. Thomson's model was an early attempt to explain atomic structure before the development of the more accurate planetary model by Ernest Rutherford.
Niels Bohr proposed his atomic model in 1913, which described the structure of the atom as having a small, positively charged nucleus surrounded by orbiting electrons in discrete energy levels. This model was a significant advancement in the understanding of atomic structure and laid the foundation for modern quantum theory.