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Using the NIST Spectral Database, entering sodium (Na) with $\lambda$ between 588nm and 590nm gives wavelengths of 588.9950954nm and 589.5924237nm.

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The title of the paper is: "Electromagnetic phenomena in a system moving with any velocity smaller than that of light" It can be found in full here: http://en.wikisource.org/wiki/Electromagnetic_phenomena. Scans of the original are available, at least for the moment, here (pdf) and here (png's). As wikisource notes the work is in the public domain in most ...

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Miller, J.S.: The notched stick. Am. J. Phys. 23/3, 176 (1955). http://adsabs.harvard.edu/abs/1955AmJPh..23..176M Laird, E.R.: A notched stick. Am. J. Phys. 23/7, 472 (1955). http://adsabs.harvard.edu/abs/1955AmJPh..23..472L Scott, G.D.: Control of the rotor on the notched stick. Am. J. Phys. 24/6, 464 (1956). ...

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