Table 1.

Locations and strengths of image charges by the least squares approach with a=1, h=0.1, ε_i = 2. The first image charge q₁ is located at the Kelvin point x₁, and the second image charge q₂ with location x₂.

		rs: source point charge location
εo		0.01	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9
50	q1	−87.952	−8.793	−4.394	−2.926	−2.191	−1.748	−1.452	−1.239	−1.077	−0.947
	x1	100.000	10.000	5.000	3.333	2.500	2.000	1.667	1.429	1.250	1.111
	q2	−24.725	−2.479	−1.250	−0.845	−0.647	−0.533	−0.462	−0.417	−0.392	−0.387
	x2	375.010	37.501	18.751	12.500	9.375	7.500	6.250	5.357	4.688	4.167
60	q1	−89.364	−8.935	−4.465	−2.973	−2.226	−1.777	−1.476	−1.260	−1.096	−0.964
	x1	100.000	10.000	5.000	3.333	2.500	2.000	1.667	1.429	1.250	1.111
	q2	−22.106	−2.217	−1.118	−0.756	−0.580	−0.478	−0.415	−0.375	−0.354	−0.350
	x2	371.846	37.185	18.592	12.395	9.296	7.437	6.197	5.312	4.648	4.132
70	q1	−90.421	−9.040	−4.518	−3.009	−2.253	−1.799	−1.495	−1.276	−1.110	−0.978
	x1	100.000	10.000	5.000	3.333	2.500	2.000	1.667	1.429	1.250	1.111
	q2	−20.122	−2.018	−1.018	−0.689	−0.529	−0.436	−0.379	−0.343	−0.324	−0.322
	x2	369.603	36.960	18.480	12.320	9.240	7.392	6.160	5.280	4.620	4.107
80	q1	−91.246	−9.123	−4.559	−3.037	−2.274	−1.816	−1.509	−1.289	−1.121	−0.988
	x1	100.000	10.000	5.000	3.333	2.500	2.000	1.667	1.429	1.250	1.111
	q2	−18.557	−1.862	−0.939	−0.636	−0.488	−0.403	−0.350	−0.318	−0.301	−0.300
	x2	367.929	36.792	18.396	12.264	9.198	7.359	6.132	5.256	4.599	4.088