>From my time as a grad student at a place that did atmospheric research, and >my research advisor being an expert on cloud physics...
1) water vapor is invisible, and when its mixed with air (N and O), it LESS DENSE than dry air, thus it rises. i.e., water evaporating off a lake is invisible and rises as a column of moist air until... 2) it reaches the condensation level, which is determined by the temperature and atmospheric pressure at any point as the vertical column of moist air is rising. 3) when that moist air reaches CL, water begins to condense onto dust particles. I.e., you need a nucleating particle onto which the water can condense, then the water droplet will grow by further condensation. Sodium iodide is commonly used as a nucleating agent in cloud seeding efforts. 4) Clouds can be VERY turbulent structures, with various vertical columns of rising air and columns of less humid falling air, and a significant shear at the boundaries!!! Ask any pilot who is still alive and has flown thru a reasonably large cumulus cloud. Can you say, E-ticket at Disneyland? 5) Whether the liquid water droplets in a cloud fall out (as rain) is simply a matter of how turbulent the cloud is (how strong the updrafts are) and how big the droplet are... As soon as the droplets reach a size that can no longer be supported by the updrafts, they fall out... 6) at the same time, dry air from above the cloud is being entrained (mixed) into the cloud causing dilution of the very humid cloud with drier air... This is for the usual convective cumulus clouds that most are familiar with. -Mark -----Original Message----- From: Abd ul-Rahman Lomax [mailto:[email protected]] Sent: Monday, June 20, 2011 8:46 PM To: [email protected]; [email protected] Subject: Re: [Vo]:[Video] Andrea Rossi Explains His Energy Catalyzer (NET - June 14, 2011) At 08:54 PM 6/20/2011, Terry Blanton wrote: >Either that or Rossi has discovered antifuggingravity. Come on! >Water is heavier than air. Sure it is, but water droplets can be airborne for a long time. Witness any cloud.
