PHYS 1070 Lecture 3: Standing Waves
25 Mar 2015
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Phys1070: intro physics for life sci - lecture 3: standing waves. When its reflected at a barrier, the returning wave is out of phase by pi radians. If there are barriers at both ends there is a reflection at both ends and the waves will be constantly travelling back and forth. Result: a wave trapped in one spatial location that has oscillating amplitude. At all times, node positions (y=0) are at the same x. At all times, antinode positions are at the same x. 2 waves travelling in opposite directions in the same medium. Resultant wave is the sum of the incident and reflected wave. Wavelength stays the same but amplitude increases. 2 waves with the exact same end, beginning and origin values. Create a total of 0 ie. y= -6cos2t sin 3pi x: amplitude, period, wavelength, 6, w=2, k= 3pi 2pi/ .
