POV-Ray : Newsgroups : povray.binaries.images : Opaque clouds? Server Time
29 Jul 2024 22:26:52 EDT (-0400)
  Opaque clouds? (Message 11 to 11 of 11)  
<<< Previous 10 Messages Goto Initial 10 Messages
From: David Given
Subject: Re: Opaque clouds?
Date: 4 Jan 2014 17:22:08
Message: <52c88990@news.povray.org>
On 29/12/13 15:30, Jörg 'Yadgar' Bleimann wrote:
> On 24.12.2013 05:47, John Coppens wrote:
[...]
>> Just an observation - clouds are generally from 0 to say 10 or 12 km.
>> Normally the height of the clouds is only 4-6km. Only in summertime,
>> you'l have cumulonimbus reaching above 10km.
> 
> You have to take into account that the scene is set on a terraformed
> Earth's moon - with only one sixth of Earth's gravity, the atmosphere is
> much less compressed towards the surface than on Earth

Yup. I spent way too long fiddling with atmospheric density formulae of
various degrees of correctness and eventually just gave up and
multiplied all the heights by six. (Povray's arbitrary density units
make physical accuracy moderately futile, anyway.) That 35km cloud
altitude is supposed to be equivalent to 5km cirrus.

-- 
┌─── dg@cowlark.com ─────
http://www.cowlark.com ─────
│ "There does not now, nor will there ever, exist a programming
│ language in which it is the least bit hard to write bad programs." ---
│ Flon's Axiom


Post a reply to this message

<<< Previous 10 Messages Goto Initial 10 Messages

Copyright 2003-2023 Persistence of Vision Raytracer Pty. Ltd.