what is longitudinal wave?
Answers
Answer:
In a simple language
↓↓↓↓↓↓
a wave that vibrates in the direction that it is moving
In a Difficult language
↓↓↓↓↓↓↓↓↓↓↓
Longitudinal wave, wave consisting of a periodic disturbance or vibration that takes place in the same direction as the advance of the wave. ... Sound moving through air also compresses and rarefies the gas in the direction of travel of the sound wave as they vibrate back and forth.
Answer:
Longitudinal Waves
Mechanical waves are classified as longitudinal waves and transverse waves. Longitudinal waves occur in the large solids and also in engineering fluids. Longitudinal waves include sound waves, seismic P-waves, and ultrasound waves. These waves are known as compression waves as they develop compression and rarefaction while travelling through any medium. When the particles are together, the pressure is high and the region is known as compression and when the particles are apart, the pressure is low and the region is known as rarefaction.
The other type of mechanical waves, known as the transverse waves are waves where the displacement of the medium is at right angles to the direction of propagation and are known as t-waves. These waves need a medium to travel through. A wave along with the length of a spring is a good visualization where the distance between the coils increases or decreases.
What Is Longitudinal Wave?
Longitudinal waves are the waves where the displacement of the medium is in the same direction as the direction of the travel of the wave.
The distance between the centres of two consecutive regions of compression or the rarefaction is defined by wavelength, λ. When the compression and rarefaction regions of two waves coincide with each other, it is known as constructive interference and if the regions of compression and rarefaction do not coincide, it is known as destructive interference.
Longitudinal wave diagram
A compression in a longitudinal wave is a region where the particles are the closest together while rarefaction in a longitudinal wave is a region where the particles are spread out.
Sound Waves
A sound wave is an example of a longitudinal wave and is produced by the vibrating motion of the particles that travel through a conductive medium. The example of sound waves in a longitudinal direction is tuning fork.
In Sound waves, the amplitude of the wave is the difference between the maximum pressure caused by the wave and the pressure of the undisturbed air. The propagation speed of sound depends upon the type, composition of the medium, and temperature through which it propagates.
Sound Waves
Longitudinal Wave Formula
y(x,t)=y0cos[ω(t−xc)]
Where,
y is the displacement of the point on the traveling sound wave
x is the distance the point traveled from the wave’s source
t is the time elapsed
y0 is the amplitude of the oscillations
c is the speed of the wave
ω is the angular frequency of the wave
Quantity x/c = time ( wave takes to travel the distance x).
Frequency (f) of the wave is given by the formula:
f=ω2π