Shockwave Lyrics Follow

In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance. When a wave moves faster than the local speed of sound in a fluid, it is a shock wave. Like an ordinary wave, a shock wave carries energy and can propagate through a medium; however, it is characterized by an abrupt, nearly discontinuous change in pressure, temperature and density of the medium.
For context of comparison, in supersonic flows, additional increased expansion may be achieved through an expansion fan, also known as a Prandtl-Meyer expansion fan. Moreover, the accompanying expansion wave may approach and eventually collide and recombine with the shock wave, which is a process of destructive interference. Thus the sonic boom associated with the passage of a supersonic aircraft is a type of sound wave produced by constructive interference.
Unlike solitons (another kind of nonlinear wave), the energy and speed of a shock wave alone dissipates relatively quickly with distance.
Hence, when a shock wave passes through matter, energy is preserved but entropy increases. This change in the matter's properties manifests itself as a decrease in the energy which can be extracted as work, and as a drag force on supersonic objects; shock waves are strongly irreversible processes.

Source: Wikipedia

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