Re: Sometimes people believe things that are nonsense

From	Sergio <invalid@invalid.com>
Newsgroups	sci.physics
Subject	Re: Sometimes people believe things that are nonsense
Date	2016-07-19 18:05 -0500
Organization	Aioe.org NNTP Server
Message-ID	<nmmbng$110g$1@gioia.aioe.org> (permalink)
References	<71e85c18-b8f4-4d46-a93d-d14fb3848e7e@googlegroups.com> <1jsonb9lg3b7cjvib5abkjp49ui85qhopc@4ax.com>

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On 7/6/2016 12:33 AM, Michael J. Strickland wrote:
> On Sun, 3 Jul 2016 10:13:32 -0700 (PDT), James McGinn
> <jimmcginn9@gmail.com> wrote:
>
> ...
>> The most stupefying myth in all of meteorology is the myth that steam can persist in our atmosphere.

> Steam is water vapor above air saturation density. The steam coming
> out of a kettle is opaque because it is well over saturation density
> (>> 100% humidity) and pushes the air aside as it exits. Technically,
> its not persisting in the atmosphere since it has purged the
> atmosphere from its vicinity. As it spreads out, colliding and mixing
> with the heavier air molecules, it loses kinetic energy (cools) due to
> the work it does against atmospheric pressure. By the time it reaches
> saturation density (100% humidity) it has become translucent (almost
> transparent) instead of opaque. If its density increases beyond
> saturation due to a pressure pulse for instance or further cooling, it
> forms water droplets (clouds).

> As water vapor (much lighter than air) rises and cools, it condenses
> into water droplets (clouds). As water vapor condenses into a cloud,
> the volume reduction (vapor to liquid) reduces the outward positive
> pressure of the cloud and allows more moisture laden air to flow into
> the cloud. This effect causes the cloud to grow in all directions.

> Droplets at the top of the cloud (coldest) fall downward with a very
> small terminal velocity and usually evaporate from air frictional
> heating before falling very far. The resultant vapor rises upward
> again to the top of the cloud and condenses again to repeat the cycle.
> The energy required to vaporize a droplet increases with the mass of
> the droplet (cube of the droplet radius ) but the energy acquired from
> falling friction increases only as the square of the droplet radius.
> Thus the larger the droplet, the farther it falls before evaporating
> again.

> As the cloud grows upward and the temperature at the top drops, colder
> and larger drops form. They are larger because the vapor molecules are
> moving slower and more nucleate (stick together) per second. These
> larger, colder droplets eventually survive the trip falling through
> the cloud and (and air below the cloud) without vaporizing. They hit
> the ground as rain drops.
>
> Mike
> ---------------------------------------------------
> Michael J. Strickland			Reston, VA
> ---------------------------------------------------
>

good explination, and shows the complex process of going from opaque 
steam to invisable gas.

Thread

Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-03 10:13 -0700
  Re: Sometimes people believe things that are nonsense Michael J. Strickland <michael06582@comcast.net> - 2016-07-06 01:33 -0400
    Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-05 23:03 -0700
    Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-06 09:59 -0700
    Re: Sometimes people believe things that are nonsense noTthaTguY <abu.kuanysh05@gmail.com> - 2016-07-06 11:15 -0700
      Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-06 18:33 -0700
    Re: Sometimes people believe things that are nonsense pcardinale@volcanomail.com - 2016-07-06 12:02 -0700
      Re: Sometimes people believe things that are nonsense noTthaTguY <abu.kuanysh05@gmail.com> - 2016-07-06 14:25 -0700
    Re: Sometimes people believe things that are nonsense Sergio <invalid@invalid.com> - 2016-07-06 14:40 -0500
      Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-07 05:51 -0700
        ah, cOOl noTthaTguY <abu.kuanysh05@gmail.com> - 2016-07-08 10:51 -0700
          Re: ah, cOOl noTthaTguY <abu.kuanysh05@gmail.com> - 2016-07-08 16:07 -0700
      Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-07 11:22 -0700
        Re: Sometimes people believe things that are nonsense pnalsing@gmail.com - 2016-07-07 18:20 -0700
          Re: Sometimes people believe things that are nonsense Sergio <invalid@invalid.com> - 2016-07-08 13:51 -0500
      Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-19 19:45 +0200
    Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-19 19:43 +0200
      Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-19 19:58 +0200
      Re: Sometimes people believe things that are nonsense Poutnik <poutnik4nntp@gmail.com> - 2016-07-19 21:48 +0200
        Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-19 22:29 +0200
          Re: Sometimes people believe things that are nonsense Odd Bodkin <bodkinodd@gmail.com> - 2016-07-19 15:33 -0500
            Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-19 22:40 +0200
              Re: Sometimes people believe things that are nonsense Poutnik <poutnik4nntp@gmail.com> - 2016-07-19 23:24 +0200
          Re: Sometimes people believe things that are nonsense Poutnik <poutnik4nntp@gmail.com> - 2016-07-19 23:15 +0200
      Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-20 09:08 -0700
        Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-21 03:27 +0200
          Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-22 20:58 -0700
            Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-23 07:55 +0200
              Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-23 09:21 -0700
      Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-20 12:19 -0700
        Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-21 04:58 +0200
          Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-21 05:12 +0200
          Re: Sometimes people believe things that are nonsense Poutnik <poutnik4nntp@gmail.com> - 2016-07-21 07:22 +0200
          Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-21 14:00 -0700
            Re: Sometimes people believe things that are nonsense pnalsing@gmail.com - 2016-07-21 17:46 -0700
              Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-22 08:10 -0700
            Precipitation (was: Sometimes people believe things that are nonsense) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-23 07:32 +0200
              Re: Precipitation (was: Sometimes people believe things that are nonsense) James McGinn <jimmcginn9@gmail.com> - 2016-07-23 08:33 -0700
                Re: Precipitation Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-23 21:25 +0200
                Re: Precipitation James McGinn <jimmcginn9@gmail.com> - 2016-07-23 12:38 -0700
                Re: Precipitation Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-23 22:01 +0200
                Re: Precipitation James McGinn <jimmcginn9@gmail.com> - 2016-07-23 18:09 -0700
                Re: Precipitation Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-24 03:53 +0200
                Re: Precipitation James McGinn <jimmcginn9@gmail.com> - 2016-07-24 06:17 -0700
                Re: Precipitation Sergio <invalid@invalid.com> - 2016-07-23 22:41 -0500
                Re: Precipitation James McGinn <jimmcginn9@gmail.com> - 2016-07-24 09:14 -0700
          Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-22 08:21 -0700
            Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-23 07:33 +0200
              Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-23 08:35 -0700
          Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-22 12:16 -0700
            Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-23 07:52 +0200
              Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-23 09:20 -0700
                Re: Sometimes people believe things that are nonsense Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-07-23 21:45 +0200
                Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-23 18:06 -0700
          Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-24 11:10 -0700
    Re: Sometimes people believe things that are nonsense Sergio <invalid@invalid.com> - 2016-07-19 18:05 -0500
      Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-07-20 11:58 -0700
        Re: Sometimes people believe things that are nonsense noTthaTguY <abu.kuanysh05@gmail.com> - 2016-07-20 15:13 -0700
          Re: Sometimes people believe things that are nonsense Sergio <invalid@invalid.com> - 2016-07-20 18:12 -0500
  Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-08-31 07:14 -0700
  Re: Sometimes people believe things that are nonsense James McGinn <jimmcginn9@gmail.com> - 2016-09-01 15:29 -0700

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