[Jlab-seminars] Fwd: Physics Colloquium Friday, February 14, 2014

[Mary Fox]

-------- Original Message --------
Subject: 	Physics Colloquium Friday, February 14, 2014
Date: 	Mon, 10 Feb 2014 16:23:43 +0000
From: 	Wilkinson, Eleonor V <evwilk at wm.edu>
To: 	'physics0607 at physics.wm.edu' <physics0607 at physics.wm.edu>



*_PHYSICS COLLOQUIUM_*

Friday, February 14, 2014

4:00 PM

Small Hall, Room 111

*Dr. D. Chris Benner *

College of William & Mary

*Title of Talk:*

/“Methane in the Outer Solar System: A Century and a Half Later”/

*Abstract:*

In 1802 Wollaston first saw the solar spectral lines that Fraunhofer 
rediscovered in 1814.  By the 1860s strong spectral features, later 
found to be due to methane, were found to dominate the spectra of all of 
the atmospheres of the outer solar system.  There has followed a century 
and a half of efforts to first identify, then quantify these spectral 
bands which are essential to the study of the energy transfer, structure 
and chemical composition of the atmospheres.  The bands in the visible 
and near infrared regions are so complex and the outer solar system 
physical conditions so extreme that it was thought that proper 
laboratory study was still at least decades away.  However, a 
combination of the intracavity laser spectrometer of the University of 
Missouri at St. Louis and the College of William and Mary multispectrum 
nonlinear least squares spectrum fitting technique have determined the 
basic measurements for the 890 nm band. It is now possible to properly 
model an outer solar system atmosphere in this band. 
https://events.wm.edu/event/view/physics/35290

*//*

*//*

*/*Refreshments will be served in Room 122 at 3:30 PM/*

Thanks,

Elle

******

*Eleonor V. Wilkinson*

Administrative & Office Specialist

The College of William & Mary-Physics
Small Hall, Room 123
300 Ukrop Way
Williamsburg, VA 23185

Telephone: 757-221-3503

Fax: 757-221-3540



-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://mailman.jlab.org/pipermail/jlab-seminars/attachments/20140210/0cb4e172/attachment.html