SPACE AND COSMIC RAY PHYSICS SEMINAR

University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, October 22, 2012
Coffee, Tea & Snacks 4:15-4:30 PM

Jan V. Sengers
Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742
Thermal fluctuations in fluids on earth and in space

During the past few decades it has been discovered that thermally induced nonequilibrium fluctuations in fluids become macroscopically large, even when the system is far away from any hydrodynamic instability. Theoretical and experimental evidence for this phenomenon will be presented. However, these fluctuations cannot grow indefinitely since they become suppressed by gravity. To examine the effect of gravity I shall also discuss some recent experiments performed in space under the auspices of the European Space Agency. These experiments have confirmed that thermally induced nonequilibrium fluctuations in fluids in space are several orders of magnitude larger than those observed on earth.


Sponsored by: Department of Physics and the Institute for Physical Science and Technology, University of Maryland. For information call Catha Stewart at (301) 405-4811 or go to the UMD Space Physics group seminar web site.

There is free parking after 4:00 PM in lot B (the big parking garage across the street from the ATL building). There are a limited number of spaces in lot Q next to the new ATL wing with free parking after 4PM even when there is a basketball game on campus.