amplitude in a wave on a diagram
Wave Basics: Problem Set Overview This set of 29 problems targets your ability to determine wave quantities such as frequency, period, wavelength, amplitude and speed from verbal descriptions and diagrams of physical situations pertaining to waves. (Redirected from Wave amplitude) The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period). There are various definitions of amplitude (see below), which are all functions of the magnitude of the difference between the variable's extreme values. This is known as boundary behavior. As a result of the reflection and transmission, changes in amplitude, wavelength and speed can often be observed. Most commonly, one observes that a transmitted wave (or pulse) has a different wavelength and speed than the incident wave (or pulse). Points C and J on the diagram represent the troughs of this wave. The trough of a wave is the point on the medium that exhibits the maximum amount of negative or downward displacement from the rest position. The wave shown above can be described by a variety of properties. One such property is amplitude. The amplitude of a wave refers to the maximum amount of displacement of a particle on the medium from its rest position. In a sense, the amplitude is the distance from rest to crest. Similarly, the amplitude can be measured from the rest position to the trough position. In fact, the wavelength of a wave can be measured as the distance from a point on a wave to the corresponding point on the next cycle of the wave. In the diagram above, the wavelength is the horizontal distance from A to E, or the horizontal distance from B to F, or the horizontal distance from D to G, or the horizontal distance from E to H. In this case, Wave B would have a negative amplitude since it is a trough; and so a positive amplitude and a negative amplitude would be added together to determine the displacement of the medium at that location and moment in time. (October 2007) The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period). There are various definitions of amplitude (see below), which are all functions of the magnitude of the difference between the variable's extreme values. x = A sin ⁡ ( ω [ t − K ] ) + b , {\displaystyle x=A\sin(\omega [t-K])+b\ ,}. 1  A is the amplitude (or peak amplitude), 2  x is the oscillating variable, 3  ω is angular frequency, 4  t is time, 5  K and b are arbitrary constants representing time and displacement offsets respectively. Wave Basics: Problem Set Overview. This set of 29 problems targets your ability to determine wave quantities such as frequency, period, wavelength, amplitude and speed from verbal descriptions and diagrams of physical situations pertaining to waves. Problems range in difficulty from the very easy and straight-forward to the very difficult and complex. In the diagram above, the amplitude could be measured as the distance of a line segment that is perpendicular to the rest position and extends vertically upward from the rest position to point A. The wavelength is another property of a wave that is portrayed in the diagram above. The wavelength of a wave is simply the length of one complete wave cycle. If you were to trace your finger across the wave in the diagram above, you would notice that your finger repeats its path. A wave is a repeating pattern.
The amplitude of a wave refers to the maximum amount of displacement of a particle on the medium from its rest position.