### Lively Standing Wave

This effect was found after the discovery of standing wave compression. The gist of the phenomenon is simple: as soon as we create a difference in frequencies, then the standing wave disappears, but, instead, we have to deal with energy transfer (current) in the direction of the oscillator with the lower frequency.

Fig. 12. Lively standing wave

What is interesting is that, here, we first encounter the idea of energy transfer velocity. The meaning of the energy transfer velocity is fairly simple and can be illustrated by an action, where an observer moves in the direction of the energy transfer with the same velocity.

As soon as the velocity of the observer coincides with that of energy transfer, he observes a fairly normal standing wave moving parallel together with him. This means that a lively standing wave can be observed in the only case: if the velocity of the observer coincides with the velocity of its motion in space.

We picture this situation in Figure 12 as well as by drawing a formula by which, knowing the frequency difference, one can determine the velocity of a lively standing wave or, as a matter of fact, the velocity of the energy transfer.

Next, we will return to a discussion of this phenomenon, because it is arrhythmia that is able to shed light on such questions as energy, force, inertia, mass and, of course, gravitation.

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