Fundamentals of Physics, II - Video

Ramamurti Shankar
  • 4.0 (120)
  • SCIENCE
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Fundamentals of Physics, II - Video

This is a continuation of the introductory course on the principles and methods of physics for students who have good preparation in physics and mathematics. This course covers electricity, magnetism, optics and quantum mechanics.

  1. 04/06/2011 · VIDEO

    22 - Quantum Mechanics IV: Measurement Theory, states of definite energy

    It is shown how to extract the odds for getting different values of momentum from a generic wave function by writing it as a sum over functions of definite momentum. A recipe is given for finding states of definite energy, which requires solving a differential equation that depends on what potential the particle is experiencing. The particle in a box is considered and the allowed energies derived.

    4 sec

  2. 04/06/2011 · VIDEO

    21 - Quantum Mechanics III

    The fact that the wave function provides the complete description of a particle's location and momentum is emphasized. Measurement collapses the wave function into a spike located at the measured value. The quantization of momentum for a particle on a ring is deduced.

    4 sec

  3. 04/06/2011 · VIDEO

    20 - Quantum Mechanics II

    Lecture begins with a detailed review of the double slit experiment with electrons. The fate of an electron traversing the double slit is determined by a wave putting an end to Newtonian mechanics. The momentum and position of an electron cannot both be totally known simultaneously. The wave function is used to describe a probability density function for an electron. Heuristic arguments are given for the wave function describing a particle of definite momentum.

    4 sec

  4. 04/06/2011 · VIDEO

    19 - Quantum Mechanics I: Key Experiments and Wave-particle duality

    The double slit experiment, which implies the end of Newtonian Mechanics is described. The de Broglie relation between wavelength and momentum is deduced from experiment for photons and electrons. The photoelectric effect and Compton scattering, which provided experimental support for Einstein's photon theory of light are reviewed. The wave function is introduced along with the probability interpretation. The uncertainty principle is shown arise from the fact that the particle's location is determined by a wave and that waves diffract when passing a narrow opening.

    4 sec

  5. 04/06/2011 · VIDEO

    18 - Wave Theory of Light

    Young's double slit experiment shows clearly that light is a wave. (In order to observe the wave behavior of light, the slit size and separation should be comparable or smaller than the wavelength of light.) Interference is described using real and complex numbers (in anticipation of quantum mechanics). Grating and crystal diffraction are analyzed.

    4 sec

  6. 04/06/2011 · VIDEO

    17 - Ray or geometrical optics II

    Ray diagrams are used to investigate the behavior of light incident on mirrors and lenses. The principle of least time is used to show that all rays from an object in front of a concave mirror focus on the image point if they are not too far from the axis. The experiments describing the breakdown of geometric optics are discussed.

    4 sec

  7. 04/06/2011 · VIDEO

    16 - Ray or geometrical optics I

    Geometric optics is discussed as an approximation to wave theory when the wavelength is very small compared to other lengths in the problem (such as the size of openings). Many results of geometric optics involving reflection, refraction (mirrors and lenses) are derived in a unified way using Fermat's Principle of Least Time.

    4 sec

  8. 04/06/2011 · VIDEO

    15 - Maxwell's Equations and Electromagnetic Waves II

    The physical meaning of the components of the wave equation and their applications are discussed. The power carried by the wave is derived. The fact that unlike Newton's laws, Maxwell's equations are already consistent with relativity is discussed. The existence of magnetism is deduced from a thought experiment using relativity.

    4 sec
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This is a continuation of the introductory course on the principles and methods of physics for students who have good preparation in physics and mathematics. This course covers electricity, magnetism, optics and quantum mechanics.

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