http://demonstrations.wolfram.com/GroupAndPhaseVelocity
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The group velocity v_g is the speed of the overall shape of a modulated wave (called the envelope). This is defined by d??/d?k (chosen here to equal 1), where ? is the angular velocity and k is the wave number. The phase velocity v_p of a wave is the sp...
Contributed by: Enrique Zeleny
What is this music? I'd love to get a copy. Thanks.
steprestwich 11 months ago