## What is incident wave and reflected wave?

The incident wave is the one that approaches the boundary, but hasn’t reached it yet. • The reflected wave is the one that moves away from the boundary, but in the same medium as the incident wave.

## What is an incident wave?

An incident wave is a current or voltage wave that travels through a transmission line from the generating source towards the load.

**What happens when a wave is reflected?**

Reflection involves a change in direction of waves when they bounce off a barrier. Refraction of waves involves a change in the direction of waves as they pass from one medium to another. So if the medium (and its properties) is changed, the speed of the waves is changed.

**What is wave reflection?**

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Reflection is observed with surface waves in bodies of water. Reflection is observed with many types of electromagnetic wave, besides visible light.

### What do waves transmit?

Waves can transfer energy over distance without moving matter the entire distance. For example, an ocean wave can travel many kilometers without the water itself moving many kilometers. The water moves up and down—a motion known as a disturbance. It is the disturbance that travels in a wave, transferring energy.

### What is incident voltage?

For a transmission line connected at one side to a generator with internal impedance equal to the characteristic impedance of the transmission line and connected at the other side to a load also equal to the characteristic impedance, the incident voltage on the transmission line is equal to half the generator voltage.

**How are reflected waves related to incident waves?**

The reflected waves can interfere with incident waves, producing patterns of constructive and destructive interference. This can lead to resonances called standing wavesin rooms.

**How is a wave reflected at a rigid boundary?**

A travelling wave, at a rigid boundary or a closed-end, is reflected with a phase reversal but the reflection at an open boundary takes place without any phase change. Mathematically, if the incident wave is represented as y (x, t) = a sin (kx – ωt), then, for reflection at a rigid boundary, the reflected wave is represented by

## How to calculate the reflection of a wave?

Mathematically, if the incident wave is represented as y i(x, t) = a sin (kx – ωt), then, for reflection at a rigid boundary, the reflected wave is represented by. y r (x, t) = a sin (kx + ωt + π). = – a sin (kx + ωt) And when the wave gets reflected at an open boundary, the reflected wave is represented by. y r (x, t) = a sin (kx + ωt).

## What happens when an incident wave hits a flap?

The incident wave (a) arriving on the flap is reflected by the wall. The result is a second wave (the reflected wave (b)) propagating in the opposite direction of the incident wave. The overlapping of these two waves generates a standing wave of twice the amplitude of the incident wave.