ABOUT COCARD. Since 1999, COCARD has been a company composed of like-minded, owner-operated, sub-ISOs. We have formed an entity whose purposes and structure allow us to capitalize on collective bargaining benefits and a mutually leveraged exit strategy. COCARD is managed by member volunteers with over 100 years of industry experience.
Description of his model: Bohrâs atom like Rutherfordâs contained a dense, positive nucleus. He expanded on Rutherfordâs ideas, turning his attention to describing the electron. He stated they moved in fixed, circular orbits (or energy levels) around the nucleus, these called electron shells.
In Modern Quantum Mechanics, however, the electron does not orbit the nucleus. It is a standing wave (the wavefunction/state vector) around the nucleus; and it's energy levels are given by the Eigenvalues of the Hamiltonian: $$E\psi = H\psi=i\hbar\frac{\partial\psi}{\partial t} $$ In QFT, again the same thing, the electron does not orbit; it's an excitation of the electron field determined by the Dirac Equation.