whence, after the introduction of non-dimensional time t' connected to t by the relation t = (64/27)(pw/p)(jß/fc2)(Mft/gf)i', we obtain

The solution of this equation at t' > t[ (£ > has the form

Knowing c it is easy to find the dependencies of wave characteristics on time. These dependencies, in accordance with (3.5.30) and (3.5.33), are written to within small terms as follows:

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