Sound Barriers

Do you ever wonder how an aeroplane breaks the sound barrier? Do you ever wonder how the sound barrier relates to sound waves? Interestingly enough, Sound Barriers waves and the sound barrier is related in several different ways. In this article, we will take a look at the three different sound waves, and explain the sound barrier. Just like the human eyes can detect light and colour, our ears can detect sound. Sound is a wave that is created by several vibrating objects through a medium from one location to another. These waves are created when molecules bump into one another through the air. When these waves reach our ears, it causes our eardrums to vibrate. When your brain receives these sound waves, the brain automatically decodes the different vibrations into three categories such as voices, music, and noises.

As an example, let's imagine a teacher using a tuning fork. A tuning fork is a metal object, which is typically used for tuning an instrument, or in this case, showing the waves. As the metal tines of the tuning fork vibrate back and forth, they begin to disturb the air molecules surrounding it. When the sound wave is moving through the air, as one air particle is displaced, it can exert a push or pull on its nearest neighbours, displacing them from the equilibrium position. Since the wave has a disturbance that can be transported through a medium, by using the mechanism of particle-to-particle interaction, a sound wave can be characterized as a mechanical wave.

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The definition of medium is a material in which the disturbance is moving or a series of interacting particles. Waves can also be longitudinal waves, in which the motion of the individual particles of the medium is at a direction that is parallel to the direction the energy is transported. A longitudinal wave is when the motion of the individual particles of the medium is in a direction, which is parallel to the direction the energy is transported. The waves in the air are longitudinal waves because the particles of the medium through which sound is transported vibrated in the parallel direction as the sound wave moves. Lastly, mechanical waves are the result of back and forth vibrations of particles of the medium, through which the wave is moving. If the sound wave is moving from left to right, then particles of air will be displaced rightward and leftward as the energy from the wave passes through it.

How do these three different sound waves relate to the sound barrier? Just like sound waves, an object in motion such as an aeroplane can cause a chain reaction of having air molecules collide and spread outward in all directions at the speed of sound. The wave of molecular collisions is called pressure waves. When an aeroplane flying faster than the speed of Acoustic Barriers Sound Barriers creates shock waves, the waves will form a cone shape and extend outward until they dissipate. If the aeroplane is flying low enough that a shock wave reaches the ground, anyone in the shock wave will experience a sonic boom. The sound is suddenly caused, the momentary change in air pressure will register in our ears as a loud bang.