File Name: standing waves and traveling waves .zip
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- Journal of the Optical Society of America B
- Standing waves review
- 16.7: Standing Waves and Resonance
It can be seen that the agreement between the two is excellant.
Chapter A wave is the motion of a disturbance in a medium. The medium for ocean waves is water, for example. When a string, fixed at both ends, is given a vertical hit by a stick, a dent appears in it that travels along the string.
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As we saw in the last section, when waves have the same frequency, it is possible for them to interfere completely, either destructively or constructively. Waves of the same frequency that interfere can be generated by propagating waves along a string, as the reflected waves from the end of the string will have the same frequency as, and interfere with, the original waves. The standing wave is named this way because it does not appear to propagate along the string. Instead, each point on the string will oscillate with an amplitude that depends on where the point is located along on the string. In contrast, for a traveling wave, all of the points oscillate with the same amplitude. The solid line in each of the three panels corresponds to one particular snapshot of the standing wave at a particular instant in time.
Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs and how to get involved. Authors: A. Pinter , M. Comments: 4 pages, 5 figures Subjects: Pattern Formation and Solitons nlin.
Journal of the Optical Society of America B
A mechanical wave is a disturbance that is created by a vibrating object and subsequently travels through a medium from one location to another, transporting energy as it moves. The mechanism by which a mechanical wave propagates itself through a medium involves particle interaction; one particle applies a push or pull on its adjacent neighbor, causing a displacement of that neighbor from the equilibrium or rest position. As a wave is observed traveling through a medium, a crest is seen moving along from particle to particle. This crest is followed by a trough that is in turn followed by the next crest. In fact, one would observe a distinct wave pattern in the form of a sine wave traveling through the medium. This sine wave pattern continues to move in uninterrupted fashion until it encounters another wave along the medium or until it encounters a boundary with another medium. This type of wave pattern that is seen traveling through a medium is sometimes referred to as a traveling wave.
Standing wave , also called stationary wave , combination of two waves moving in opposite directions, each having the same amplitude and frequency. The phenomenon is the result of interference; that is, when waves are superimposed, their energies are either added together or canceled out. In the case of waves moving in the same direction, interference produces a traveling wave. For oppositely moving waves, interference produces an oscillating wave fixed in space. A vibrating rope tied at one end will produce a standing wave , as shown in the figure; the wave train line B , after arriving at the fixed end of the rope, will be reflected back and superimposed on itself as another train of waves line C in the same plane. Because of interference between the two waves, the resultant amplitude R of the two waves will be the sum of their individual amplitudes.
Chapter 8. Traveling Waves. In this chapter, we show how the same physics that leads to standing wave oscillations also gives rise to waves that move in space.
Standing waves review
There are two major categories in a thermoacoustic prime-mover. One is the traveling-wave type and the other is the standing-wave type. A simple analytical model of a standing-wave thermoacoustic prime-mover is proposed at relatively low heat-flux for a stack much shorter than the acoustic wavelength, which approximately describes the Brayton cycle. In other words, the standing-wave type is a phase-dominant type while the traveling-wave type is an amplitude-dominant one. This is a preview of subscription content, access via your institution.
16.7: Standing Waves and Resonance
A micro- to milli-sized linear traveling wave TW actuator fabricated with microelectromechanical systems MEMS technology is demonstrated. The device is a silicon cantilever actuated by piezoelectric aluminum nitride. Specifically designed top electrodes allow the generation of TWs at different frequencies, in air and liquid, by combining two neighboring resonant modes. This approach was supported by analytical calculations, and different TWs were measured on the same plate by laser Doppler vibrometry.
The mathematics of wave motion also has application to electromagnetic waves (including visible light), though the physical origin of those traveling disturbances.
We found that interference occurs between two identical waves, but we didn't mention what the source of two identical waves might be. We will find that most of the time the two waves are actually the same wave, where one part of it has been diverted somehow, so that it behaves like a separate wave. When we witness the interference created in such a situation, it is often in the form of an interference pattern. This is a recognizable pattern of intensity that repeats itself in space or in time, or in both. We will see lots of these patterns in the sections to come, but as usual we will start with a simple but important one-dimensional example of an interference pattern, called a standing wave.
Throughout this chapter, we have been studying traveling waves, or waves that transport energy from one place to another. Under certain conditions, waves can bounce back and forth through a particular region, effectively becoming stationary. These are called standing waves. Another related effect is known as resonance. In Oscillations , we defined resonance as a phenomenon in which a small-amplitude driving force could produce large-amplitude motion.