9.1 WAVES
9.1.1 Frequency and Wavelength
9.1.2 Graphical Representation of Waves
9.1.3 Wave speed
9.1.4 Wave Intensity

9.2 PHASE
9.2.1 Phase Relationship
9.2.2 Phase Relationship in Graphs

9.3 LONGITUDINAL WAVE
9.3.1 Transverse Vs Longitudinal
9.3.2 Sound Wave
9.3.3 Graphs of Longitudinal Wave

9.4 ELECTROMAGNETIC WAVE
9.4.1 The Electromagnetic Spectrum
9.4.2 Polarization
9.4.3 The Three Polarizer Problem

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For the PDF version, click here.

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Demonstrations: Click here

Explanation Videos: Click here

Animations: Click here

Applet:
Wave Speed {phet applet}
Longitudinal Wave {ngsir  applet}
Longitudinal Wave {cabrillo flash}
EM Wave {cabrillo flash}
Polarizers {cabrillo applet}