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The Balmer Spectrum of Hydrogen: An Old Experiment with a New Twist
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Abstract
This paper describes a novel twist to the undergraduate experiment in which students study the UV-visible emission produced from a deuterium discharge tube. In this approach, students do not have to make any assumptions about the nature of the emission lines in order to analyze the spectrum; they first perform a three-parameter nonlinear regression and discover that the emission belongs to the Balmer series and that the 656 nm line is the a line. Subsequently they perform a one-parameter nonlinear regression to obtain the value of the Rydberg constant.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Laboratory InstructionKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Atomic Properties / StructureCiting Articles
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History
- Received: August 03, 2009
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