The period, on the other hand, is obtained when one observesthe displacement of one point as a function of time.There are in general two possible types of waves: transverse and longitudinal waves. The time interval between successive identical displacements of agiven point is the period T of the wave. This experiment should famil-iarize you with the phenomenology of waves.2901 1 Lab 1-9.ĭuring each period T, the wave travels a dis-tance of one wavelength therefore the velocity of the wave is given by cf.The figure below shows the vertical displacement of the string versus time at a fixed lo-cation along the string. Note that the period of the motion is determined The discussion of waves is treated in the text in the chapters on Sound (Mechanical Waves) and Electro-magnetic Waves. The frequency, f, of the wave is defined as the number of times per second the dis-turbance is repeated. If thewave is moving to the right and a second picture is taken a quarter period T4 later, allpoints on the wave will have moved an equal distance to the right, as shown by the dottedcurve. If the disturbance is periodic, i.e., if the identi-cal disturbance is repeated continuously, a wave train will move down the string. Sincethe individual particles vibrate in a direction perpendicular to the direction of propaga-tion, the wave is called a transverse wave. Neighboring points will then follow the motion,and the original disturbance will propagate down the string as a travelling wave. The amplitude A of the wave is the maximum magnitude of the displacement.If a long, taut horizontal string is sharply pulled up at some point and released, this partof the string will vibrate up and down. The wavelength is the spatial separation between repeating points in a wave. The frequency f, defined as f 1T, measures the number of complete cycles the wave repeats in one second. We illustrate here prop-erties of waves using waves in a stretched string and sound in an air column.To be able to deal with waves we introduce a number of definitions: The period T is the time it takes until a wave repeats itself. Theory2.1 WavesWaves are periodic disturbances propagating in space and time. In this experiment, we gain experience withproperties shared by many different kinds of waves.2. Thenatural world is full of waves, and technology has multiplied their importance to us.All waves share certain physical similarities. Sources Of Uncertainty In A Standing Wave Experiment Full Of Waves The human body creates waves (like heartbeats) and diagnosticsof the bodys physical condition involve many different kinds of wave phenomena. Sources Of Uncertainty In A Standing Wave Experiment Full Of Waves.
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