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Beats Model

(Complete Item Description)

Abstract:: The EJS Beats model displays the result of adding two waves with different frequencies. The simulation displays the superposition of the two waves as well as a phasor diagram that shows how the waves add up at one point in space. The ratio of the wave amplitudes, the ratio of the frequencies, and the phase shift between the two waves can be changed via textboxes.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Open Source Physics

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Ejs Normal Modes on a Loaded String Model

(Complete Item Description)

Abstract:: The EJS Normal Modes on a Loaded String model displays the motion of a light string under tension between two fixed points. The string is also loaded with N masses located at regular intervals. The number of masses on the string can be changed via textboxes.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Open Source Physics

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Ejs Wave Representations Model

(Complete Item Description)

Abstract:: The EJS Wave Representations model displays two representations of a sinusoidal wave on a string. One shows a movie of the wave traveling along a string - you can think of this representation as a sequence of photographs. The second representation is a plot of the displacement as a function of time for two points on the string (you can select which two points to use). Using only these two representations, you can determine the values of many different parameters that describe the wave.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Open Source Physics

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Harmonics and Fourier Series Model

(Complete Item Description)

Abstract:: The EJS Harmonics and Fourier Series model displays the sum of harmonics via a Fourier series to yield a new wave. The amplitude of each harmonic as well as the phase of that harmonic can be changed via sliders. In addition, several pre-set functions can be chosen to display. You can modify this simulation if you have EJS installed by right-clicking within the plot and selecting "Open EJS Model" from the pop-up menu item.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Open Source Physics

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Oscillator Chain Model

(Complete Item Description)

Abstract:: The EJS Oscillator Chain model shows a one-dimensional linear array of coupled harmonic oscillators with fixed ends. This model can be used to study the propagation of waves in a continuous medium and the vibrational modes of a crystalline lattice. The EJS model shown here contains 31 coupled oscillators equally spaced within the interval [0, 2 pi] with fixed ends.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Open Source Physics

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Wave Motion and Sound - Quiz

(Complete Item Description)

Abstract:: To revise and reinforce some of the concepts associated with wave motion and sound.

Subject:: Science and Technology
Grade Level:: Secondary
Collection:: Scoilnet

Wave Motion in the Ocean and the Atmosphere, Spring 2008

(Complete Item Description)

Abstract:: This course is an introduction to basic ideas of geophysical wave motion in rotating, stratified, and rotating-stratified fluids. Subject begins with general wave concepts of phase and group velocity. It also covers the dynamics and kinematics of gravity waves with a focus on dispersion, energy flux, initial value problems, etc. Also addressed are subject foundation used to study internal and inertial waves, Kelvin, Poincare, and Rossby waves in homogeneous and stratified fluids. Laplace tidal equations are applied to equatorial waves. Other topics include: resonant interactions, potential vorticity, wave-mean flow interactions, and instability.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: MIT OpenCourseWare

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