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Showing 16 to 30 of 147 results Save | Export
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de la Vega-Herna´ndez, Karen; Antuch, Manuel – Journal of Chemical Education, 2015
A vectorial representation of the full sequence of events occurring during the 2D-NMR heteronuclear single-quantum correlation (HSQC) experiment is presented. The proposed vectorial representation conveys an understanding of the magnetization evolution during the HSQC pulse sequence for those who have little or no quantum mechanical background.…
Descriptors: Correlation, Quantum Mechanics, Science Experiments, Magnets
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Keeports, David – European Journal of Physics, 2012
Macroscopic objects, although quantum mechanical by nature, conform to Newtonian mechanics under normal observation. According to the quantum mechanical correspondence principle, quantum behavior is indistinguishable from classical behavior in the limit of very large quantum numbers. The purpose of this paper is to provide an example of the…
Descriptors: Numbers, Probability, Quantum Mechanics, Physics
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deSouza, Romualdo T.; Iyengar, Srinivasan S. – Journal of Chemical Education, 2013
A first-year undergraduate course that introduces students to chemistry through a conceptually detailed description of quantum mechanics is outlined. Quantization as arising from the confinement of a particle is presented and these ideas are used to introduce the reasons behind resonance, molecular orbital theory, degeneracy of electronic states,…
Descriptors: Quantum Mechanics, Science Instruction, College Science, College Freshmen
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Anderson, Bruce D. – Journal of Chemical Education, 2012
Many quantum mechanical models are discussed as part of the undergraduate physical chemistry course to help students understand the connection between eigenvalue expressions and spectroscopy. Typical examples covered include the particle in a box, the harmonic oscillator, the rigid rotor, and the hydrogen atom. This article demonstrates that…
Descriptors: Chemistry, Science Instruction, Quantum Mechanics, Mechanics (Physics)
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Papageorgiou, George; Markos, Angelos; Zarkadis, Nikolaos – Chemistry Education Research and Practice, 2016
The current study aims to investigate students' representations of the atomic structure in a number of student cohorts with specific characteristics concerning age, grade, class curriculum and some individual differences, such as formal reasoning and field dependence/independence. Two specific task contexts, which were designed in accordance with…
Descriptors: Science Instruction, Chemistry, Molecular Structure, Nuclear Energy
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Rothman, Tony; Boughn, Stephen – European Journal of Physics, 2011
Marcella has presented a straightforward technique employing the Dirac formalism to calculate single- and double-slit interference patterns. He claims that no reference is made to classical optics or scattering theory and that his method therefore provides a purely quantum mechanical description of these experiments. He also presents his…
Descriptors: Optics, Quantum Mechanics, Science Instruction, Computation
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Passante, Gina; Emigh, Paul J.; Shaffer, Peter S. – Physical Review Special Topics - Physics Education Research, 2015
Superposition gives rise to the probabilistic nature of quantum mechanics and is therefore one of the concepts at the heart of quantum mechanics. Although we have found that many students can successfully use the idea of superposition to calculate the probabilities of different measurement outcomes, they are often unable to identify the…
Descriptors: Science Instruction, Mechanics (Physics), Quantum Mechanics, Scientific Concepts
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Chiarello, Fabio; Castellano, Maria Gabriella – International Journal of Game-Based Learning, 2016
In this paper the authors report different experiences in the use of board games as learning tools for complex and abstract scientific concepts such as Quantum Mechanics, Relativity or nano-biotechnologies. In particular we describe "Quantum Race," designed for the introduction of Quantum Mechanical principles, "Lab on a chip,"…
Descriptors: Games, Scientific Concepts, Science Instruction, Science Education
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Hoyer, Chad E.; Kegerreis, Jeb S. – Journal of Chemical Education, 2013
The essentials of Monte Carlo integration are presented for use in an upper-level physical chemistry setting. A Mathcad document that aids in the dissemination and utilization of this information is described and is available in the Supporting Information. A brief outline of Monte Carlo integration is given, along with ideas and pedagogy for…
Descriptors: Monte Carlo Methods, Chemistry, Physics, Computer Assisted Design
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Grumbling, Emily R.; Pichugin, Kostyantyn; Mabbs, Richard; Sanov, Andrei – Journal of Chemical Education, 2011
An overview and simple example of photoelectron imaging is presented, highlighting its efficacy as a pedagogical tool for visualizing quantum phenomena. Specifically, photoelectron imaging of H[superscript -] (the simplest negative ion) is used to demonstrate several quantum mechanical principles. This example could be incorporated into an…
Descriptors: Chemistry, Quantum Mechanics, Visual Aids, Spectroscopy
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Miller, Tierney C.; Richardson, John N.; Kegerreis, Jeb S. – Journal of Chemical Education, 2016
This manuscript presents an exercise that utilizes mathematical software to explore Fourier transforms in the context of model quantum mechanical systems, thus providing a deeper mathematical understanding of relevant information often introduced and treated as a "black-box" in analytical chemistry courses. The exercise is given to…
Descriptors: Science Instruction, Mathematics, Computer Software, Educational Technology
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Derman, Aysegül; Koçak, Nuriye; Eilks, Ingo – Education Sciences, 2019
This study focused on determining the elements of mental models of atomic structure and views on visual representations of models of atomic structure in two sub-cohorts of student teachers studying at a university in Turkey. In total, 141 student teachers participated in this study. In the first cohort, the focus was on 73 freshman science student…
Descriptors: Schemata (Cognition), Preservice Teachers, Science Teachers, Preferences
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Flannigan, David J. – Journal of Chemical Education, 2014
A simple Excel spreadsheet-based program for simulating atomic emission spectra from the properties of neutral atoms (e.g., energies and statistical weights of the electronic states, electronic partition functions, transition probabilities, etc.) is described. The contents of the spreadsheet (i.e., input parameters, formulas for calculating…
Descriptors: Spreadsheets, Simulation, College Science, Chemistry
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Stewart, Brianna; Hylton, Derrick J.; Ravi, Natarajan – Journal of Chemical Education, 2013
A systematic way to understand the intricacies of quantum mechanical computations done by a software package known as "Gaussian" is undertaken via an undergraduate research project. These computations involve the evaluation of key parameters in a fitting procedure to express a Slater-type orbital (STO) function in terms of the linear…
Descriptors: Science Instruction, College Science, Chemistry, Computer Assisted Instruction
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Syam, Debapriyo; Roy, Arup – European Journal of Physics Education, 2011
The Bohr-Sommerfeld quantum theory specifies the rules of quantization for circular and elliptical orbits for a one-electron hydrogen atom-like system. This article illustrates how a formula connecting the principal quantum number "n" and the length of the major axis of an elliptical orbit may be arrived at starting from the quantum…
Descriptors: Quantum Mechanics, Mechanics (Physics), Scientific Principles, Molecular Structure
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