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If (when is true velocity), then for each *s* the position of reflectors is correct.
It is not difficult to show that in this situation the operator supplies
the order of touching then, with accordance to equation (140),
*q*^{'}_{I}=*q*.

If then each reflector's image will be distorted and, in a
general case, we shall have *r*=1, so

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Stanford Exploration Project

1/13/1998