TAILIEUCHUNG - The Quantum-Mechanical Model of the Atom

The second objective of governor adjustment is twofold: to adjust the governor to optimize performance within the power system and to optimize the governor’s ability to carry an isolated load. Most governor manufacturer’s literature provides a procedure for adjusting the governor. These procedures usually require making adjustments to minimize visible “hunting” by the governor. While this may provide a governor response that is adequate for synchronizing, it will probably not provide an optimum response on line or may not allow the governor to adequately maintain frequency if disconnected from the grid. The governor should respond to frequency. | Key Learning Objectives 282 The Wave Nature of Matter the de Broglie Wavelength the Uncertainty Principle and Indeterminacy 264 Quantum Mechanics and the Atom 269 The Shapes of Atomic Orbitals 276 Schrodinger s Cat 253 The Nature of Light 254 Atomic Spectroscopy and the Bohr Model 262 The thought experiment known as Schrodinger s cat was intended to show that the strangeness of the quantum world does not transfer to the macroscopic world. The Quantum-Mechanical Model of the Atom Anyone who is not shocked by quantum mechanics has not understood it. Neils Bohr 1885-1962 The early part of the twentieth century brought changes that revolutionized how we think about physical reality especially in the atomic realm. Before that time all descriptions of the behavior of matter had been deterministic the present set of conditions completely determining the future. Quantum mechanics changed that. This new theory suggested that for subatomic particles electrons neutrons and protons the present does NOT completely determine the future. For example if you shoot one electron down a path and measure where it lands a second electron shot down the same path under the same conditions will not necessarily follow the same course but instead will most likely land in a different place Schrodinger s Cat 253 Quantum-mechanical theory was developed by several unusually gifted scientists including Albert Einstein Neils Bohr Louis de Broglie Max Planck Werner Heisenberg P. A. M. Dirac and Erwin Schrodinger. These scientists did not necessarily feel comfortable with their own theory. Bohr said Anyone who is not shocked by quantum mechanics has not understood it. Schrodinger wrote I don t like it and I m sorry I ever had anything to do with it. Albert Einstein disbelieved the very theory he helped create stating God does not play dice with the universe. In fact Einstein attempted to disprove quantum mechanics without success until he died. However quantum mechanics .

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