 | November 1, 2008
By:Volker Thomsen
A short history of the early scientific developments related to the optical emission lines of hydrogen is presented. These were crucial to the development of the quantum theory. Balmer's empirical formula was an important milestone. Rydberg and others provided additional work, especially for higher atomic numbers. However, it remained for Bohr to provide the physical reasoning.
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 | April 1, 2008
By:David W. Ball
Columnist David W. Ball discusses the pioneering work of Erwin Schrodinger, whose work on wave mechanics forms the basis of the modern understanding of subatomic behavior.
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August 31, 2009
Scientists from IBM Research used an atomic force microscope to create the first-ever close-up image of a single molecule.
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 | August 24, 2009
By:Laura Thompson
One of the most difficult tasks in any laboratory is the validation and assurance of all data being reported. Whether or not this is being mandated by a regulating agency, it is imperative that the quality of data from any analysis be controlled. How do the laboratory workers ensure the quality of their reported analyses and how do they demonstrate this quality?
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 | May 1, 2009
By:Steven Wilbur
Guest columnist Steven Wilbur discusses the elemental nature of ICP-MS and its strength as a universal quantifier, an aspect of the technique he believes has not received enough attention.
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