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LAB# 25: RIPPLE TANK (WAVE PHENOMENA) INTRODUCTION: In this experiment we observe some properties of waves with the aid of a ripple tank. The velocity of a wave is a property of the medium that the wave is moving in. In the case of surface waves, the velocity is a function of the depth of the water. Since, for any wave, v = λf (1) (v is the velocity, f the frequency, λ the wavelength), we can study the effects of different wavelengths by changing the frequency of the source. APPARATUS: Ripple tank with Pasco wave generator and strobe light (CAUTION: do not stare directly at the light source), various barriers, eyedropper, and large sheets of paper for tracing. The sheets of paper for tracing should be placed directly under the ripple tank. Remember to turn off the ripple generator and light source when finished with your experiment. When you are not measuring the wavelength, switch the light source from strobe to steady. Figure 1, Pasco Ripple Generator NOTE: We have sets of film loops, which illustrate all of the wave phenomena under optimum conditions. If you find that you cannot produce the patterns that you anticipate, or don't fully understand what you see, it is worthwhile to take a look at some of the experiments done on the film loops. Ask your lab instructor about their use.
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This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

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