Show o rt Cause of Keel I Water i The track of Miiooth nttter or + keel water stretelilnn in the wake t of a moving ehf > el IK I often noticed but y + little undethtood The effect Is I not I due to the Inlluence tif oil on surface tension hough the stllllne of the V d waves may be Mmlliir 1iof As y i hoin n Orman Invextliialor has made y t oiin experiments wltll bodies movlne tin the water and these how that the 1 IOMIOlllc aotlon of the eddies or M whirl loft behind on each blue of the p > ekse Kiuooth out the nimHcr wares and give the calm olupp < ailnf truck I that Is so familiar The larger mid Ii 1 tItI the stilt the longer am broader I 1 broad-er U the Milooth Make 1 P S 1V i tit HrS Hr-S b t 1 S = = |