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PHYSICS SEMINAR ANNOUNCEMENT
Swenson College of Science and Engineering
Department of Physics
University of Minnesota Duluth

    Cosmology: The Origin of our Universe
Dr. Thorsten Battefeld,
Department of Physics, UMD

Thursday, September 18, 2014
MWAH 195
9:00am



This seminar is for PHYS. 1021 but is also open to the public, it is designed to introduce undergraduate’s research topics and also for those interested in the topics discussed to come and listen!



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Physics Colloquium Announcement
Swenson College of Science and Engineering
Department of Physics
University of Minnesota Duluth


The Granck-Hertz Experiemnts, 1911-1914:
Experimentalists in Search of a Theory
Clayton Gearhart
Professor Emeritus of Physics
St. Johns University, Collegeville, MN




Thursday, September 25
MWAH 195
4:00pm



Abstract: In 1911, James Franck and Gustav Hertz began a collaboration in investigate the nature of collisions of slow electrons with gas molecules that led to a series of carefully planned and executed experiments, culminating with their discovery of inelastic collisions of electrons with mercury vapor atoms in 1914. This paper tells the story of their collaboration, their initial (and incorrect) interpretation of their results, and the eventual reinterpretation as a confirmation of Niels Bohrs new atomic theory, largely as a result of experiments done in North America during the First World War. 

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Soudan Mine Braces ForNerd Invasion

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