ABSTRACT
Initial conditions are prescribed:
= ( þ
,
,
) at = 0, #
= ( þ
,
,
) at = 0.
Solution (Kirchhoff’s formula):
,
,
, ) = 14 $ #
( , * , + ) , -
+ 1
,
=
( − þ
)2 + ( * − ß
)2 + ( + −
)2,
where the integration is performed over the surface of the sphere of radius with center at ( þ
,
,
).
