. "Central Field, Inverse square law ] - \u0395\u03AF\u03B4\u03BF\u03C2 \u03A0\u03B5\u03B4\u03AF\u03BF\u03C5 \u03C4\u03B7\u03C2 \u03A6\u03CD\u03C3\u03B7\u03C2."@el . . . "\u039A\u03B5\u03BD\u03C4\u03C1\u03B9\u03BA\u03CC \u03A0\u03B5\u03B4\u03AF\u03BF"@el . "Central Field, Inverse square law ] - \u0395\u03AF\u03B4\u03BF\u03C2 \u03A0\u03B5\u03B4\u03AF\u03BF\u03C5 \u03C4\u03B7\u03C2 \u03A6\u03CD\u03C3\u03B7\u03C2."@el . .