About
Topics
Progressive wavesTransverse and longitudinal waves
Determination of frequency and wavelength
Stationary waves
Description
Play with the 2 Wave Superposition Model. Test what you've learned by exploring the amplitudes, wave velocities, frequencies, wavelengths.
As a pedagogical tool, "modeling pedagogy: key in your own equation like A*sin(2*pi/λ(xv*t) form" .
for ease of keying in, select from the dropdown menu is also possible before adding on through the input fields of f(x) and g(x).
The OneDimensional Wave Function Superposition JavaScript Model shows how the superposition principle gives rise to wave phenomena such as standing waves and beats. Users enter realvalued wave functions and observe both the time dependent functions and their superposition. This model uses the JavaScript mathematical function parser.
Sample Learning Goals
(a) show an understanding and use the terms displacement, amplitude, phase difference, period,frequency, wavelength and speed
(b) deduce, from the definitions of speed, frequency and wavelength, the equation v = fλ
(c) recall and use the equation v = fλ
(f) analyse and interpret graphical representations of transverse and longitudinal waves
(a) explain and use the principle of superposition in simple applications
Version:
For Teachers
Translations
Code  Language  Translator  Run  

Software Requirements
Android  iOS  Windows  MacOS  
with best with  Chrome  Chrome  Chrome  Chrome 
support fullscreen?  Yes. Chrome/Opera No. Firefox/ Samsung Internet  Not yet  Yes  Yes 
cannot work on  some mobile browser that don't understand JavaScript such as.....  cannot work on Internet Explorer 9 and below 
Credits
This email address is being protected from spambots. You need JavaScript enabled to view it.; wolfgang, This email address is being protected from spambots. You need JavaScript enabled to view it.
end faq
Versions

http://www.opensourcephysics.org/items/detail.cfm?ID=13307 Physlet Sound Illustrations Package Physlet Physics Chapter 18
Other Resources
 http://physics.bu.edu/~duffy/HTML5/wave.htmlJavaScript version by Andrew Duffy
 http://physics.bu.edu/~duffy/HTML5/beats.htmlJavaScript version by Andrew Duffy
 http://physics.bu.edu/~duffy/HTML5/interference_of_pulses.htmlJavaScript version by Andrew Duffy
 http://physics.bu.edu/~duffy/HTML5/interference.html JavaScript version by Andrew Duffy
 http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=829.0 Java version Superposition of Two Waves (with different phases,same amplitude,frequency) by FuKwun Hwang
 http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=752.0 Java version Superposition of two waves (same frequency, different amplitude, phase/dir ) by FuKwun Hwang
 https://www.desmos.com/calculator/65ycbghqli
 https://www.geogebra.org/m/z57naxTr by ukukuku