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<div align="center"><font face="Times New Roman" size="6" color="navy"><b>Old Dominion University</b></font></div>
<div align="center"><font face="Times New Roman" size="6" color="navy"><b>Department of Physics</b></font></div>
<div align="center"><font face="Times New Roman" size="6" color="navy"><b>Department of Ocean Earth & Atmospheric Sciences</b></font></div>
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<div align="center"><font face="Times New Roman" size="6" color="#31849B"><b>Fall Colloquium Series</b></font></div>
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<div align="center"><font face="Times New Roman" size="5" color="#17365D"><b>Tuesday November 20, 2012</b></font></div>
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<div align="center"><font face="Times New Roman" size="5" color="#31849B"><b>"Angular scattering and holographic imaging microscopy as emerging techniques to characterize oceanic particles"</b></font></div>
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<font face="Times New Roman" size="5" color="#1F497D"><b>Dr. Michael Twardowski</b></font></div>
<div align="center"><font face="Times New Roman" size="5" color="#1F497D"><b>WetLabs</b></font></div>
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<div><font face="Times New Roman" size="4">Inversions have been developed to interpret unpolarized and polarized light scattering for undisturbed complex natural oceanic particle populations in terms of the particle subfractions
(including bubbles) responsible for the scattering. The inversions are able to quantitatively solve for subfraction size distributions, refractive index (closely linked to particle density), and particle coating thickness where applicable. We have also developed
an in-situ holographic microscope to characterize undisturbed particle size distributions, shapes, and orientations for particles as small as <1 um. As a whole, these new techniques are showing promise as next generation particle characterization tools for
the complex natural particle mixtures observed in aquatic systems.</font></div>
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<div align="center"><font face="Times New Roman" size="4">Presentation: OCNPS 200 @ 3:00 pm</font></div>
<div align="center"><font face="Times New Roman" size="4">Refreshments: Atrium @ 2:30 pm</font></div>
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<div align="center"><font face="Times New Roman" size="5">More details at <a href="http://sci.odu.edu/physics/"><font color="blue"><u>http://sci.odu.edu/physics/</u></font></a></font></div>
<div align="center"><font face="Times New Roman" size="5">All are Welcome!</font></div>
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