Stethoscope is used to hear the sounds of internal organs of a patient; for diagnostic purposes. It works on the laws of reflection of sound. In stethoscope, sound is received by chest piece and sent to the earpieces by multiple reflecting through a long tube.
Where does reflection occur in a stethoscope?
Each wave bounces, or reflects, off the inside walls of the rubber tube, a process called multiple reflection. In this way, each wave, in succession, reaches the eartips, or rubber nubs on the ends of the device, and finally the listener’s eardrums.
Which instrument is based on the reflection of sound?
Stethoscope
Stethoscope is the instrument which works on the basis of reflection of sound waves.
Which principle is used in stethoscope?
multiple reflection
A stethoscope is used to examine any patient physically. This is a medical instrument. Through this doctors listen to the sounds of beating heart and other sounds also produced within anyone’s body. So, this stethoscope works on the principle of multiple reflection.
Can reflect sound waves?
Reflection of sound waves also leads to echoes. Echoes are different than reverberations. Echoes occur when a reflected sound wave reaches the ear more than 0.1 seconds after the original sound wave was heard.Reflection of sound waves off of surfaces is also affected by the shape of the surface.
What is required for reflection of sound?
Reflection of sound follows the Laws of Reflection as light wave does. This means the angle of incident wave and reflected wave to the normal are equal. For reflection of sound a polished or rough and big obstacle is necessary.
Is an instrument which works on the principle of multiple reflection?
kaleidoscope and periscope are the instrument based on multiple reflection of light.
What are the device of reflection?
Answer : megaphone, soundboard and stethoscope are devices which work on the reflection of sound.
What are the two laws of reflection of sound?
The two laws concerned with sound reflection are as follows:Moreover, the incident sound waves, the normal at incidence point and reflected wave, all rest in a common plane.
What is multiple reflection of sound?
Multiple reflection of sound is the sound which is reflected more than once.Sound waves have much longer wavelength than the light waves, The repeated reflection that results in this persistence of sound is called reverberation.
Did you know facts about stethoscope?
Top 10 Stethoscope Facts
- A French man invented it.
- It was the first effective non-invasive tool.
- There are two types of stethoscope, monaural and binaural.
- It has three parts.
- The chest part can have a bell or diaphragm.
- The headset follows human ear anatomy.
- Uses sound to diagnose.
How does a stethoscope work physics?
The simple device amplifies the bioacoustic signals at the surface of a patient’s body. On one side of the stethoscope chest piece is a shallow funnel capped with a diaphragm that when pressed against a patient’s body picks up tiny vibrations and generates sound waves that travel up hollow tubes to the examiner’s ears.
What causes sound to reflect?
Reflection. If a sound is not absorbed or transmitted when it strikes a surface, it will be reflected.Reflection of a sound wave at a barrier, as if from an imaginary source at an equal distance behind the barrier. Sound reflection gives rise to DIFFUSION, REVERBERATION and ECHO.
What materials can reflect sound?
Sound-Reflecting Materials That Cause Echoes and Reverberations
- Marble.
- Granite.
- Clay Brick.
- Ceramic Tile.
- Smooth Concrete.
- Plaster.
- Metal.
- Glass.
What causes waves to reflect?
Reflection occurs when there is a bouncing off of a barrier. Reflection of waves off straight barriers follows the law of reflection. Reflection of waves off parabolic barriers results in the convergence of the waves at a focal point.
Does sound obey reflection law?
Yes. Sound follows the same laws of reflection as light. The reflected sound wave and the incident sound wave make an equal angle with the normal to the surface at the point of incidence. Also, the reflected sound wave, the normal to the point of incidence, and the incident sound wave all lie in the same plane.
Does megaphone utilize reflection of sound?
Megaphone is a funnel shaped instrument which is used to amplify sound.The sounds waves from our mouth hit the surrounding obstacles and get reflected. These reflected waves then enter our ears. A megaphone works on the principle of multiple reflection of sound waves.
Does Ear Trumpet use reflection of sound?
Ear Trumpet: It is a sort of machine used by persons who are hard of hearing. The sound energy received by the wide end of the trumpet is connected into a much smaller area at the narrow end by multiple reflections.
What devices have multiple reflections?
The devices is based on the principle of multiple reflection? :
- Loud speakers.
- Kaleidoscope.
- Prism.
- Rainbow.
- Human eye.
- Megaphone.
- Periscope.
- Stethoscope.
Which of the following does not work on principle of reflection?
The law of reflection states that, on reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray.In the pinhole camera, the light rays travel only in a single medium, not from one medium to another. Therefore, the pinhole camera does not work on this principle.
Which of the following devices does not work on the principle of multiple reflection of sound gramophone megaphone stethoscope bulb horn?
Which of the following devices, does not work on the principle of multiple reflection of sound? Gramophone does not work on the principle of multiple reflection of sound. Devices like megaphone, bulb horn, stethoscope and soundboards work on the principle of multiple reflection of sound.
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