Abstract: Experimental measurements are presented for collision efficiencies of highly charged droplets. The drop sizes studied range in radius from 10 to 25 ?m and carry charges of the order of 10?4 esu. Measured collision efficiencies ...

Abstract: A method of measuring very low updraft velocities (<1 m sec?1) in vertical wind tunnels is presented. It consists of observing the collision and coalescence of two equal radii droplets. The fall velocity of the resultant ...

Abstract: The lack of detailed information of the drag forces of cloud droplets during accelerated motion has made it necessary to assume that steady-state drag forces can be used to predict their motion at all times. This assumption ...