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# Sound Reflection

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Last updated date: 09th Aug 2024
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Sound is one of the most critical topics in the field of science, especially in physics. Many experiments and research has been made concerning sound. And described some characteristics, properties of sound as well. Also, the sound can be produced by three mechanisms, with the help of vibrating objects. It might be either object or vocal cord or any other accordingly. No, we are going to learn the reflection of sound.

## What is the Reflection of Sound?

Before going to explain the reflection of sound, first, understand sound. In simple terms, we can explain sound as a mechanical review that can be propagated through a medium applying some Force.

The reflection of sound can be explained as, irrespective of the surface, if the sound waves travel towards the medium, and those waves can bounce and come in the backward direction either partially or fully. It is known as a reflection of sound in terms of that medium. The same property applies to the light also. If we take any substance as your surface whether it is rough or smooth or hard water, the sound moves towards the surface, and half of the sound transfers through the medium, and the remaining half gets back to the original place. This is nothing but partially a reflection of sound.

### State Two Laws of Reflection of Sound

Based on the concept of reflection of sound, we have two different laws stated by sound reflection. If we state the laws of reflection of sound, they should be implemented while explaining the theory of performing the activity. The two laws of reflection of sound are -

• The angle of incidence is always equal to the angle of reflection.

• The reflector sound, the normal sound, and the incident sound are in the same plane.

In this way, we can state the law of reflection of sound.

### Activity

To prove that the reflection of sound waves comes in a backward direction, we could both have a small and simple activity. First, take two tubes and place them in opposite directions behind your wall. Then produce some sound into one end of the one tube, it can be heard slightly or entirely from the other end of the other two this is what we can prove that the sound can travel backward direction which is nothing but the reflection of sound. This activity can be more clear with the help of the below-shown diagram.

## Applications of Reflection of Sound

If we observe and understand the reflection of sound examples, we can easily know the applications of reflection of sound. As we have several applications of reflection of sound, let's have a glance at a few of them. They are-

### Echo:-

if the sound traveled from a rigid surface, it might be a cliff of a hill or a wall, then we can have the reflected sound with continuous vibrations. This is an example of the reflection of sound. Coming to the application of a reflection of sound, SONAR, Sound Navigation And Ranging technique uses the principle of reflection of sound to detect and navigate the objects available under the water. Also, bats and dolphins use these echos to find out the obstacles in their journey.

### Megaphone:-

The next example of reflection of sound is megaphones. The megaphones are like horn-shaped tubes which help to prevent the Ecos and multiple reflections while speaking. All the sounds can be fined and turned into a tube. These megaphones are widely used to make different announcements.

### Soundboard:-

the soundboards are curve shaped concave boards. These are used for the convenience of the audience present in the auditorium or seminar Hall etc. Usually, these are placed opposite the speakers. Using the loss of reflection of sound, these sounds take the speakers' signals and reflect the same with more quality to the audience. This helps the audience be able to hear with more clarity even though they sit far from Mike.

### Stethoscope:-

it is a piece of well-known diagnostic equipment. As we all know, it is used to hear an organ's moment in the human body. It also works on the principle of reflection of sound. The sound absorbed from the chest can be sent to the ears with the help of the tube. These stethoscopes are basic tools for every doctor. It is an icon of medical professionals.

## FAQs on Sound Reflection

1. Explain the Term Reverberations.

Ans. Reverberation is a term used to explain the principle of reflection of sound. It can be differentiated from the other applications because it can be explained as the persistence of sound will, which can be observed after multiple reflections. Due to multiple reflections for a long time, the reflected sound will be in poor quality and completely blurred. Mostly these can be observed in big halls and auditoriums. To prevent this blindness and to produce fine quality of sound for all the listeners, certain sound-absorbent objects were used. These men help to absorb the extra sound and produce the required amount for the audience.

2. Explain Various Types of Reflections?

Ans. The phenomenon of reflection is the same Whether it is light or sound or any other. Based on the principle of reflection, we have different types of reflections. They are-

• Neutron reflection, a phenomenon where we can observe in the atoms. Beating within the atoms, the neutrons get reflected and help form other compounds or materials like nuclear reactors or nuclear weapons.

• Sound reflection. This is nothing but the sound can travel partially through a medium and partially backward direction which is known as a reflection of sound when it hits a substance. Here the type of substance can't be considered majorly.

• Seismic reflection, seismology is the study of the earth. So the sesame reflection is a reflection that can be observed within the layers of the earth during earthquakes or explosions or any other natural calamities which affect more layers of earth.