The Physics Of A Wave - 790 Words

Introduction As seen in the previous laboratory experiment, standing waves are produced when a wave and its reflection are superposed. When a wave travels on a string we notice places of maximum amplitude called antinodes, and regions of no amplitude at all, that we call nodes. When the medium in which the wave travels is air instead of a string, similar observations are made. In this case, the antinodes are regions of maximum compression in the air column, while the nodes are those regions which have the lowest compression or pressure. These regions are sometimes called regions of rarefaction. In this experiment, we used a Vernier microphone, a labquest, and PVC tubes to study waves in a column of air. Description of Set Up The setup of this experiment was fairly easy. Firstly, the temperature probe and the microphone were fixed to a ring stand and connected to the labquest; the labquest was itself connected to the CPU. Photo 1. From here, the logger Pro was launched. The temperature reading was recorded (20.7 o C in our case) and the microphone background reading was noted. As this point, the use of the temperature probe was over, and so it was disconnected from the labquest. Photo 1. Outline of Technique The length and diameter of a PVC pipe were measured. These measurement are recorded in table 1. The system was programmed to start data collection the moment the noise level is 0.2 above the background noise. Then, the PVC pipe was held perpendicular to the microphoneShow MoreRelatedEssay on Acoustic Waves in Physics682 Words   |  3 PagesAcoustic Waves in Physics  An acoustic wave can simply be described as a longitudinal wave. A longitudinal wave is a wave that vibrates and moves in the direction of its propagation. This means the medium is either in the same or opposite direction of the way the wave travels. Acoustic waves are a form of Mechanical longitudinal waves; these waves are otherwise known as compression waves or compressional waves. 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