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Unformatted text preview: or leads the other: Phase What happens when we combine more than one wave? The principle of superposition says we just add the amplitudes directly to find the resultant wave. Superposition What happens when the phase of one wave is different from the other? The result is another sine wave: Superposition When waves are completely out of phase (that is they differ by 180 or radians), they may completely cancel! Superposition When waves add to produce a larger amplitude, we say that the waves constructively interfere . When waves cancel one another out, we say that the waves destructively interfere . Adding two waves of differing frequencies can produce beats . The beat frequency is the difference between the two frequencies of the waves being added. Superposition f beat = f 2f 1 Beats Beats This is how you tune an instrument. You count beats. Superposition f beat = f 2f 1...
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This note was uploaded on 05/23/2011 for the course GSCI 121 taught by Professor Niculescu,m during the Summer '08 term at James Madison University.
 Summer '08
 Niculescu,M

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