The amplitude of a reflected wave on a wall can be calculated using the formula A = r * i, where A is the amplitude, r is the reflection coefficient, and i is the incident wave amplitude. The reflection coefficient is determined by the properties of the wall, such as its material and angle of incidence.
The reflection coefficient is a measure of how much of an incident wave is reflected by a surface. It is typically represented by the letter r and is a ratio between the amplitude of the reflected wave and the amplitude of the incident wave. It can range from 0 (no reflection) to 1 (complete reflection).
The angle of incidence is a key factor in determining the amplitude of a reflected wave. The reflection coefficient is dependent on the angle of incidence, and as the angle increases, the reflection coefficient also increases, resulting in a larger amplitude of the reflected wave.
Amplitude and intensity are two different measures of a wave, but they are related. Amplitude is a measure of the maximum displacement of a wave from its equilibrium position, while intensity is a measure of the power of a wave. In the context of a reflected wave, the amplitude is affected by the properties of the reflecting surface, while the intensity is affected by the amplitude and the distance from the surface.
The distance from the reflecting surface can have a significant impact on the amplitude of a reflected wave. As the distance increases, the amplitude decreases due to the spreading out of the wave. This decrease in amplitude is known as attenuation, and it is a key factor in the design of structures that use reflected waves, such as sonar systems.