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Studying the Binomial Distribution Using LabVIEW
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George, Danielle J.; Hammer, Nathan I. – Journal of Chemical Education, 2015
This undergraduate physical chemistry laboratory exercise introduces students to the study of probability distributions both experimentally and using computer simulations. Students perform the classic coin toss experiment individually and then pool all of their data together to study the effect of experimental sample size on the binomial…
Descriptors: Science Instruction, College Science, Undergraduate Study, Science Laboratories
Are the Concepts of Dynamic Equilibrium and the Thermodynamic Criteria for Spontaneity, Nonspontaneity, and Equilibrium Compatible?
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Silverberg, Lee J.; Raff, Lionel M. – Journal of Chemical Education, 2015
Thermodynamic spontaneity-equilibrium criteria require that in a single-reaction system, reactions in either the forward or reverse direction at equilibrium be nonspontaneous. Conversely, the concept of dynamic equilibrium holds that forward and reverse reactions both occur at equal rates at equilibrium to the extent allowed by kinetic…
Descriptors: Science Instruction, Thermodynamics, Scientific Concepts, College Science
Granular Gas in a Periodic Lattice
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Dorbolo, S.; Brandenbourger, M.; Damanet, F.; Dister, H.; Ludewig, F.; Terwagne, D.; Lumay, G.; Vandewalle, N. – European Journal of Physics, 2011
Glass beads are placed in the compartments of a horizontal square grid. This grid is then vertically shaken. According to the reduced acceleration [image omitted] of the system, the granular material exhibits various behaviours. By counting the number of beads in each compartment after shaking, it is possible to define three regimes. At low…
Descriptors: Probability, Science Instruction, Scientific Principles, Science Experiments
Timing the Random and Anomalous Arrival of Particles in a Geiger Counter with GPS Devices
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Blanco, F.; La Rocca, P.; Riggi, F.; Riggi, S. – European Journal of Physics, 2008
The properties of the arrival time distribution of particles in a detector have been studied by the use of a small Geiger counter, with a GPS device to tag the event time. The experiment is intended to check the basic properties of the random arrival time distribution between successive events and to simulate the investigations carried out by…
Descriptors: Science Experiments, Intervals, Science Instruction, Laboratory Equipment
Introducing Stochastic Simulation of Chemical Reactions Using the Gillespie Algorithm and MATLAB: Revisited and Augmented
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Argoti, A.; Fan, L. T.; Cruz, J.; Chou, S. T. – Chemical Engineering Education, 2008
The stochastic simulation of chemical reactions, specifically, a simple reversible chemical reaction obeying the first-order, i.e., linear, rate law, has been presented by Martinez-Urreaga and his collaborators in this journal. The current contribution is intended to complement and augment their work in two aspects. First, the simple reversible…
Descriptors: Chemistry, Equations (Mathematics), Probability, Science Instruction
Effectiveness of a GUM-Compliant Course for Teaching Measurement in the Introductory Physics Laboratory
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Pillay, Seshini; Buffler, Andy; Lubben, Fred; Allie, Saalih – European Journal of Physics, 2008
An evaluation of a course aimed at developing university students' understanding of the nature of scientific measurement and uncertainty is described. The course materials follow the framework for metrology as recommended in the "Guide to the Expression of Uncertainty in Measurement" (GUM). The evaluation of the course is based on…
Descriptors: Physics, Laboratory Experiments, Teaching Methods, Probability