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Electrical engineering (for the light bulb)
Scientists concluded that electrons occupy specific energy levels by exciting atoms of different elements with UV light and watching the light emitted as the electrons fall back to ground state. Different elements had different characteristic emissions each time.
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The early theories of Bohr and Sommerfeld treated the electrons as orbiting particles and applied a quantum flavour to this simple idea. Sommerfelds contribution was to quantize angular momentum which allowed for ellipical orbits. The combined ideas of Bohr and Sommerfeld are often called the Bohr - Sommerfeld model. Later work by Schroedinger Dirac and others laid the foundations of the modern understanding of atomic structure electrons treating them as particles that follow a probabilistic wave function. The concept of an "orbit" circular or elliptical is not part of modern theory.
Because in conservative field the total energy is conserved therefore the work is zero
Niels Bohr was a prominent figure in the field of Physics. His work on the atomic structure and quantum Mechanics earned him the Nobel Price in Physics in 1922
Niels Bohr is important for his work in the areas of atomic structure and quantum theory. He was a physicist from the country of Denmark.
JJ Thomson, Ernest Rutherford
Niels Bohr proposed a "planetary system" model for the atom.
Niel Bohr's atomic discovery was made in Coppehagin Copenhagen, but it was published in England.
Niels Bohr created the Bohr Model of the atom. It was an improvement on previous models (Thompson's Plum Pudding Model, Rutherford's model, etc.) which depicted the atom as a positive nucleus surrounded by negative electrons. Niels Bohr was also a member of the team of scientists working on the Manhattan Project.
Niels Bohr received the Nobel Prize for Physics in 1922 for work done in the area of atomic theory.
Neils Bohr's most significant contributions to science were creating the Bohr model of the atom and furthering the understanding of quantum mechanics.
Niels Bohr was sub-atomic in height. This is how he figured out how atoms work. Wolfgang Pauli was even smaller, which is how he knew about electrons. They teamed up for a film in the twenties, but no one could see them. It was merely postulated that they were there.
Neils Bohr joined the Manhattan Project after it was started. 1955 he organized the first Atoms for Peace Conference in Geneva, Switzerland.
Niels Bohr (October 1885 to November 1962) was a physicist who made contributions to understanding atomic structure and quantum theory. Bohr attended the University of Copenhagen, the University of Cambridge, and the Victoria University of Manchester.
Niels Bohr and Max Planck are two physicists who made significant contributions to classical physics. Using Planck's work, Bohr was able to show how electrons exist in energy levels around the nucleus of an atom.