ORGAN PIPE
Organ pipes are the musical devices that produce the sound of certain frequency by pressurizing the air into them. Each pipe is tune to a specific note of music scale. organ pipes are generally made up of wood or metal And have mainly three different shapes cylindrical, conical or rectangular. Flute, horn, whistle are some examples of organ pipes. the longitudinal waves travelling along the length of pipe when interfere with the reflected waves from the another end, stationary or standing waves are produced. resonance condition occurs into it when the disturbance has the equal frequency with the natural frequency of air molecules.
organ parts are basically categorised into two types: closed end organ pipes and open end organ pipe.
Closed organ pipe
the organ pipe which one end is open to air and another end is closed off is closed organ pipe. the air at the closed end of the pipe does not move, However the air moves Freely at the open end. Since the air is not moving at the closed end a node is found at this position. the movement of air is maximum at the opening so an antinode is found at this end.
when the air is set into vibration at the open in the longitudinal waves travel into the path towards the Closed boundary. these waves then reflect back towards the open end after colliding the air molecules at the close end. in reflection compression reflects back as the refraction as the phase reversal. the wave travelling from the open end when superimposed with the reflected wave from the closed end, stationary wave is formed into the pipe.
Open organ pipe
An organ pipe whose both ends are open to air is called open organ pipe. at both ends of this pipe air is free to move so antinodes are formed at this position. when a vibration is set up at one end of this pipe it travels toward the another end in the form of compression and rarefaction. the nature of reflection is quite complicated and depends on how wide or narrow the pipe is, in comparison with wavelength of sound. in most of the musical instrument the tube is comparatively narrow relative to Wavelength. in such situation when compression recheas at open end the density of air ridley decreases. Hence the rarefaction Travels back to the pipe. Also when a rarefaction reaches to the open end compression reflects back finally the stationary wave is set up into the pipe due to the superposition of incident wave travelling towards the open end and reflected wave from that end.
Organ pipes are the musical devices that produce the sound of certain frequency by pressurizing the air into them. Each pipe is tune to a specific note of music scale. organ pipes are generally made up of wood or metal And have mainly three different shapes cylindrical, conical or rectangular. Flute, horn, whistle are some examples of organ pipes. the longitudinal waves travelling along the length of pipe when interfere with the reflected waves from the another end, stationary or standing waves are produced. resonance condition occurs into it when the disturbance has the equal frequency with the natural frequency of air molecules.
organ parts are basically categorised into two types: closed end organ pipes and open end organ pipe.
Closed organ pipe
the organ pipe which one end is open to air and another end is closed off is closed organ pipe. the air at the closed end of the pipe does not move, However the air moves Freely at the open end. Since the air is not moving at the closed end a node is found at this position. the movement of air is maximum at the opening so an antinode is found at this end.
when the air is set into vibration at the open in the longitudinal waves travel into the path towards the Closed boundary. these waves then reflect back towards the open end after colliding the air molecules at the close end. in reflection compression reflects back as the refraction as the phase reversal. the wave travelling from the open end when superimposed with the reflected wave from the closed end, stationary wave is formed into the pipe.
Open organ pipe
An organ pipe whose both ends are open to air is called open organ pipe. at both ends of this pipe air is free to move so antinodes are formed at this position. when a vibration is set up at one end of this pipe it travels toward the another end in the form of compression and rarefaction. the nature of reflection is quite complicated and depends on how wide or narrow the pipe is, in comparison with wavelength of sound. in most of the musical instrument the tube is comparatively narrow relative to Wavelength. in such situation when compression recheas at open end the density of air ridley decreases. Hence the rarefaction Travels back to the pipe. Also when a rarefaction reaches to the open end compression reflects back finally the stationary wave is set up into the pipe due to the superposition of incident wave travelling towards the open end and reflected wave from that end.
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