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Using 'Particle in a Box' Models to Calculate Energy Levels in Semiconductor Quantum Well Structures
Ebbens, A. T. – Physics Education, 2018
Although infinite potential 'particle in a box' models are widely used to introduce quantised energy levels their predictions cannot be quantitatively compared with atomic emission spectra. Here, this problem is overcome by describing how both infinite and finite potential well models can be used to calculate the confined energy levels of…
Descriptors: Science Instruction, Energy, Physics, Mathematical Concepts
Montgomery, Jason M.; Mazziotti, David A. – Journal of Chemical Education, 2020
An introduction to the Quantum Chemistry Package (QCP), implemented in the computer algebra system Maple, is presented. The QCP combines sophisticated electronic structure methods and Maple's easy-to-use graphical interface to enable computation and visualization of the electronic energies and properties of molecules. Here we describe how the QCP…
Descriptors: Chemistry, Physics, Computation, Computer Uses in Education
Anderson, Bruce D.; Gordon, Christopher M. – Journal of Chemical Education, 2008
In this experiment, linear polyynes are synthesized and then the predictions of a one-dimensional, particle in a box are used to calculate the quantum mechanical box length for the polyynes. A solution of graphite in ethanol is irradiated with a Nd:YAG laser (532 nm) and the resulting solution is filtered and analyzed. Data from gas…
Descriptors: Quantum Mechanics, Physics, Chemistry, Lasers
Hoekzema, Dick; van den Berg, Ed; Schooten, Gert; van Dijk, Leo – Physics Education, 2007
The combination of mathematical and conceptual difficulties makes teaching quantum physics at secondary schools a precarious undertaking. With many of the conceptual difficulties being unavoidable, simplifying the mathematics becomes top priority. The particle/wave-in-a-box provides a teaching model which includes many aspects of serious …
Descriptors: Foreign Countries, Teaching Models, Physics, Secondary Education
Calheiro, L. B.; Freitas, W. P. S.; Martins, C. A.; Goncalves, A. M. B. – Physics Education, 2021
We propose an apparatus that emulates the experiment used by Geiger and Marsden in 1913 to investigate alpha particles (Rutherford) scattering. Using a widely available fused deposition modelling 3D-printer, we built a compartmented and easily assembled educational instrument. The whole apparatus is composed of a 3D-printed chamber and an…
Descriptors: Computer Peripherals, Printing, Physics, Simulation
Peer reviewed
Morgan, Michael J.; Jakovidis, Greg – Physics Teacher, 1994
Provides a particle-in-a-box model to help students understand and estimate the magnitude of the characteristic energy scales of a number of quantum systems. Also discusses the mathematics involved with general computations. (MVL)
Descriptors: Energy, Higher Education, Mathematical Applications, Models
Peer reviewed
Peslak, John, Jr. – American Journal of Physics, 1979
Comparisons are made for the particle-in-a-box, the harmonic oscillator, and the one-electron atom. A classical uncertainty principle is derived and compared with its quantum-mechanical counterpart. The results are discussed in terms of the statistical interpretation of the uncertainty principle. (Author/BB)
Descriptors: Mathematics, Mechanics (Physics), Models, Physics
Peer reviewed
Liboff, Richard L. – Physics Today, 1984
Addresses the question of frequency correspondence in the domain of large quantum numbers, with reference to periodic systems. Provides two simple counterexamples (a particle in a cubical box and a rigid rotator) to show that the classical result is not always recovered in the limit of large quantum numbers. (JM)
Descriptors: College Science, Higher Education, Mechanics (Physics), Physics
Holden, Alan – 1966
This monograph is a review of the quantum mechanical concepts presented in two other monographs, "The Nature of Atoms" and "Bonds Between Atoms," by the same author. It is assumed the reader is familiar with these ideas. The monograph sketches only those aspects of quantum mechanics that are of most direct use in picturing and calculating the…
Descriptors: Chemistry, College Science, Instructional Materials, Matter
Gingras, Yves – Science & Education, 2015
In order to show how formal analogies between different physical systems play an important conceptual work in physics, this paper analyzes the evolution of Einstein's thoughts on the structure of radiation from the point of view of the formal analogies he used as "lenses" to "see" through the "black box" of Planck's…
Descriptors: Physics, Science Instruction, Case Studies, Comparative Analysis
Baily, Charles Raymond – ProQuest LLC, 2011
A common learning goal for modern physics instructors is for students to recognize a difference between the experimental uncertainty of classical physics and the fundamental uncertainty of quantum mechanics. Our studies suggest this notoriously difficult task may be frustrated by the intuitively "realist" perspectives of introductory…
Descriptors: Introductory Courses, Quantum Mechanics, Physics, Task Analysis
Swedler, James A. – 1989
This game is designed to be used in junior and senior high school science classes with the purpose of introducing quark theory to students. This material expands on atomic theory and subatomic structure. Quarks are the fundamental building blocks of protons and neutrons. The game will teach students about the standard model of elementary…
Descriptors: Atomic Theory, Educational Games, Nuclear Physics, Physics
Peer reviewed
Masut, Remo; Mullin, William J. – American Journal of Physics, 1979
Analyzes three examples of spatial Bose-Einstein condensations in which the particles macroscopically occupy the lowest localized state of an inhomogeneous external potential. The three cases are (1) a box with a small square potential well inside, (2) a harmonic oscillator potential, and (3) randomly sized trapping potentials caused by…
Descriptors: Atomic Theory, College Science, Force, Higher Education
New York Inst. of Tech., Old Westbury. – 1970
Five study segments of the Self-Paced Physics Course materials are presented in this fourth problems and solutions book used as a part of student course work. The subject matter is related to electric charges, insulators, Coulomb's law, electric fields, lines of force, solid angles, conductors, motion of charged particles, dipoles, electric flux,…
Descriptors: College Science, Electricity, Instructional Materials, Physics
New York Inst. of Tech., Old Westbury. – 1970
Five study segments of the Self-Paced Physics Course materials are presented in this seventh problems and solutions book used as a part of student course work. The content is related to magnetic fields, magnetic moments, forces on charged particles in magnetic fields, electron volts, cyclotron, electronic charge to mass ratio, current-carrying…
Descriptors: College Science, Instructional Materials, Magnets, Physics