. The Bell System technical journal . M «o MZl m2 mz W4 ms 1 1 1 1 1 1 1 1

---

. The Bell System technical journal . M «o MZl m2 mz W4 ms 1 1 1 1 1 1 1 M We nn m% m9 W7iO Wn 1 1 1 1 1 1 1 BELL SYSTEM TECHNICAL JOURNAL m. EFFECT OF GROUND PERMEABILITY 479 The curves show the effect of m = 1-7 on the mutual impedancebetween two parrallel ground return circuits with the wires lying onthe ground. The dashed portions of the curves were not computed. Appendix I Equations (4), (7) and (17) substituted into (16) give , y) = £,(.v, 0) - j[[,4V-y) /•«+ (/)(r) cos XT-e-^\l Jo = E,{x, 0) + /CO i 4>{t) cos .Tr(f-^ - 1) —Jo ^ + 7CO7 log 7 ^^ T x^ + (h - yY _ dVX^ + //2 dz + M7 ..-, C^ M^ COS XT J Jo Vt- + ia Jo -yjT^ -f ia + yur x2+ (//.- 3^)2 aF + icci log pte x2 + h^ Jo V^ -(.ft + V)T Ho:! I , COS xtcIt + 7a -|- /XT J . /h, N h X COS .rr , 0 . ^, .1-2 + (// - yY dV + 7co/ log ^—;—7T ^ ^ x- 4- //2 dz = — 74co/ I , COS XTCIT Jo VP + ta -\- yur X-2+ (// - yY dV + 7coi log -^—j—77—^ 75 — ^— • x^ + (// + v)^ dz Appendix IIThe succeeding analysis has been considerably shortened by writing In — I 480where /(O = -, + BELL SYSTEM TECHNICAL JOURNAL n J1

---

Size: 1315px × 1900px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1