Table 2.

Radius of the inclusions d, number of inclusions and the frequency.

d	M = R/2d	f = 2 Md3/R3
0.01	1000	$2.\times {10}^{-7}$
0.0125	800	$3.91\times {10}^{-7}$
0.016	625	$6\times {10}^{-7}$
0.02	500	$1\times {10}^{-6}$
0.025	400	$1.5625\times {10}^{-6}$
0.04	250	$4\times {10}^{-6}$
0.05,	200	$6.25\times {10}^{-6}$
0.08	125	$0.16\times {10}^{-4}$
0.1	100	$0.25\times {10}^{-4}$
0.2	50	$0.1\times {10}^{-3}$