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The amplitude of a wave is the height of the wave, measured from the ocean surface to the peak of the wave. 10. Compare waves created by a cruise ship engine and an underwater earthquake, using the amplitude and wavelength.

Here are some examples of amplitude: The amplitude of a water wave would be the distance between the top of a wave and the surface of the water at rest. The amplitude of a sound wave would be the density of air particles at the center of a compression or pulse of sound.

To simplify my answer, let's take an example. Imagine that you are throwing a stone into a lake. It arises from the circles on the water made by waves. Let's measure the movement of the surface of the water using a buoy.

You get a sine wave that will decay over time.

The period (T) will be the time it passes between 2 times that the wave passes its maximum for example. The frequency is the inverse function f=1/T. If the period is 1 second, the frequency will be 1Hz (1/1). If the period is 0.5 seconds, the frequency will be 2Hz (1/0.5). Etc…

The amplitude will be the measurement of where the buoy is. This amplitude, in our case, will have maximums, minimums, and zero crossings. We can plot this measurement over time which is similar to a sine wave amortization (ie it will decrease over time). In the end, the lake will become calm again, without movement.

Now any physical phenomenon that you can measure (earthquake, vibration, acoustic wave, shock, electric wave, electromagnetic wave, etc…) can have a temporal representation, more complex than a simple sinusoidal, deer were to determine different parameters like periods, frequencies and amplitudes.

The indicated signal will then be processed to determine the different characteristics of the phenomenon.

May 18, 2022

Imagining an isosceles triangle as a waveform, with the right angle sitting on a horizontal line, the topmost part of the triangle represents amplitude. The distance between the vertex of the right angle and the leg of the triangle on the horizontal line is the wavelength.

For a sine wave, there is a positive amplitude and a negative amplitude and the wavelength is the beginning of the wave below at the opposite end.

By transforming the waveform above into squares, rather than a sine shape, the peaks can be either positive or negative peak heights and the waves need not be symmetrical, so the amplitudes would be measured separately, but the wavelengths would be identical. Digital clock waveforms are positive amplitude, rectangular in shape, equal wavelength, and equally spaced intervals.

Waveforms can be sine, rectangular, or generally sawtooth, but combinations of all three also occur. Waves can also be staggered rectangles - only going up and down or only going up or down and also increasing and decreasing combinations.

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