1§ *- ; 8 ‘ UF oNeraier resee. 4 . _ i ; ninammendvanes . 4a 9 8 ra 7 Ks 5OM7| 4 NX 6 5 | La Y ¢ LZ S 25 TS — — ak [50087 2 Ww > ® IS a a o | ests 7 WA as o it \ NL 7 7) Le - to =z o Zo > 7 2 06 & os o¢ a3 FIGURE 8 0.25 DURATION OF POSITIVE PHASE VS DISTANCE FROM BOMB o2 FOR SURFACE BURSTS IDEAL SURFACE oss eo . L5 za a5 3 6 s 6 F 89 45 @O 25 FO DISTANCE FROM BOMB, 1000's FEET Fo 30 60 Fo 8&0 930/00 |