----- Original Message ----- From: "Darren Garrison" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, March 14, 2005 10:39 AM
Subject: Re: [meteorite-list] Bright Streak of Light in Sky ReportedfromSouthern Oregon to Seattle
On Mon, 14 Mar 2005 09:05:57 -0500, "ks1u" <[EMAIL PROTECTED]> wrote:
The thing which is most interesting to me in these fireball sightings is the
color of the flame. The only fireball I saw was an orange/yellow. Is it
reasonable to make a guess as to the composition based on flame colors, in
the way geologists do a flame test? Or, are there too many other variables?
You also have to take into account, I think, the composition of the atmosphere around the meteor.
(Here's a page on the aurora that I googled up, but the info should be fit for the ionization of
atmospheric gasses by a meteroid, too http://www.wonderquest.com/NorthernLightsOxygen.htm).
FWIW, I've seen plenty of fireballs that are green, and about the same apparent size and brightness
as a round from a roman candle.
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