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V.6 No 4, pp 13 - 19

17

The features of inclined force acting

fig5.gif (9884 bytes)

Actually, for each picked out region at the moment t0

(22)
where deltabig.gif (843 bytes)xi = xi - x0 . With it the denominator of (7) takes the form

(23)

Consequently,

(24)

As we can see from (24), Gi   variation depends as on the parameters t0 and x0 determining the momentary time of Gi investigation and location of the picked out region as on the wave delay phase when transiting from the surface a0 to the surface ai. But the wave delay has the time-dependent pattern, since, though the wave propagates in space, its delay is caused by the finiteness of its propagation velocity, which makes it just time-dependent. So we can transform deltabig.gif (843 bytes)xi  in the following standard way:

where deltabig.gif (843 bytes)ti  is the wave delay time when transiting along the picked out region V0i . Then (10) takes the form

(25)

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