Keywords: Harmonics (31)

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Advanced Structural Dynamics and Acoustics (13.811), Spring 2004
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Advanced Structural Dynamics and Acoustics (13.811), Spring 2004

Foundations of 3D elasticity. Fluid and elastic wave equations. Elastic and plastic ... (more)

Foundations of 3D elasticity. Fluid and elastic wave equations. Elastic and plastic waves in rods and beams. Waves in plates. Interaction with an acoustic fluid. Dynamics and acoustics of cylindrical shells. Radiation and scattering by submerged plates and shells. Interaction between structural elements. Response of plates and shells to high-intensity loads. Dynamic plasticity and fracture. Damage of structure subjected to implosive and impact loads. (less)

Subject:
Science and Technology
Material Type:
Assessments
Full Course
Homework and Assignments
Lecture Notes
Syllabi
Provider:
M.I.T.
Provider Set:
MIT OpenCourseWare
Author:
Schmidt, Henrik
Digital Filters Applet
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Digital Filters Applet

This java applet simulates the use of digital filters. Several sounds are ... (more)

This java applet simulates the use of digital filters. Several sounds are provided including speech and noise. The user can apply various filters and view and hear their effect. The page includes extensive instructions for the applet and the source code. This applet is part of a large collection of physics and math applets. (less)

Subject:
Physics
Material Type:
Activities and Labs
Full Course
Instructional Material
Interactive
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Paul Falstad
Fourier Series Applet
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Fourier Series Applet

This java applet simulates fourier approximations of sine, triangle, sawtooth and square ... (more)

This java applet simulates fourier approximations of sine, triangle, sawtooth and square waves, as well as noise, along with their phase terms and harmonics. The number of terms is adjustable, and the function can be played(in Windows), with adjustable frequency. The function can be resampled, quantized, rectified and full rectified. The applet can also simulate distortion. The page includes extensive instructions for the applet and source code. (less)

Subject:
Mathematics
Physics
Material Type:
Instructional Material
Interactive
Reference
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Paul Falstad
Harmonic Series
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Harmonic Series

The harmonic series is the key to understanding not only harmonics, but ... (more)

The harmonic series is the key to understanding not only harmonics, but also timbre and the basic functioning of many musical instruments. (less)

Subject:
Arts
Material Type:
Readings
Syllabi
Provider:
Rice University
Provider Set:
Connexions
Author:
Catherine Schmidt-Jones
Harmonic Series II: Harmonics, Intervals, and Instruments
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Harmonic Series II: Harmonics, Intervals, and Instruments

The interval between two notes is related to the ratio of the ... (more)

The interval between two notes is related to the ratio of the frequencies of the two pitches. A notated harmonic series can show the relationship between frequency and interval. The timbre of an instrument is determined by the relative strengths of the harmonics in each note. (less)

Subject:
Arts
Material Type:
Readings
Syllabi
Provider:
Rice University
Provider Set:
Connexions
Author:
Catherine Schmidt-Jones
Harmonics
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Harmonics

This simulation illustrates the behavior of standing waves in situation where one ... (more)

This simulation illustrates the behavior of standing waves in situation where one end fixed, both ends are fixed, and both ends are free. The simulation allows the user to examine the standing wave behavior at the fundamental frequency and when the first three harmonics are added. The user can control the amplitude of each of the harmonics and observe the resulting pattern. (less)

Subject:
Physics
Material Type:
Full Course
Instructional Material
Interactive
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Pascal Renault
Illinois PER Interactive Examples: Tension
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Illinois PER Interactive Examples: Tension

This item is an interactive homework problem relating to harmonics. It features ... (more)

This item is an interactive homework problem relating to harmonics. It features two strings with the same mass density stretched between the same posts. If the fundamental frequency of the first string is twice that of the second, what is the ratio of tension of the first string to the tension of the second. The problem is accompanied by a "help" sequence designed to encourage critical thinking before attempting the mathematics. It is part of a larger collection of interactive problems developed by the Illinois Physics Education Research Group. (less)

Subject:
Physics
Technology
Education
Material Type:
Activities and Labs
Full Course
Instructional Material
Lecture Notes
Reference
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Gary Gladding
Loaded String Simulation
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Loaded String Simulation

The applet simulates a string which can be 'plucked' or shaped with ... (more)

The applet simulates a string which can be 'plucked' or shaped with the mouse, have a driving force applied, be 'touched' to quiet a mode, or selected to vibrate at its fundamental frequency. Options include displaying phases, phasors, modes or phase cosines and adjusting the damping, force frequency (which can be set to resonance frequency), number of loads, simulation speed and tension. A sound option is also included, but only works in Windows. The sound applet only works in Microsoft Java, but a second applet is included with no sound for Netscape/Sun Java. (less)

Subject:
Physics
Material Type:
Instructional Material
Interactive
Reference
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Paul Falstad
PhET Teacher Ideas & Activities: Waves Review
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PhET Teacher Ideas & Activities: Waves Review

This is a comprehensive problem set (with solutions) for high school physics, ... (more)

This is a comprehensive problem set (with solutions) for high school physics, developed for use with the PhET simulation <i>Wave on a String</i>. It is formatted so that users can make responses online, at the same time they are interacting with the simulation. It assesses understanding of the motion of single and dual pulses/waves generated on a virtual string with fixed or movable end. Users will be demonstrating comprehension of wave properties, reflection, wave interference, standing waves, and introductory harmonics. Solutions are detailed, and may be distributed to provide immediate feedback upon completion. <i>Allow two days if completed in school computer lab.</i> <b>SEE RELATED MATERIALS ON THIS PAGE</b> for a link to the "Wave on a String" simulation. (less)

Subject:
Physics
Education
Material Type:
Activities and Labs
Assessments
Full Course
Instructional Material
Lecture Notes
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Michael Gallo
The PhET Project
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