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A very simple and color-observable homemade Raman spectroscope with easy preparation is introduced by simply adding low-cost components (a transmission diffraction grating sheet, a magnifying glass, a ...

See it in action here with Planets (oscilloscope music by Jerobeam Fenderson) The audio source is included by default, it works across platforms (windows, macos, linux) and uses the default sound ...

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II. Series. MESSRS. RUNGE AND PASCHEN 2 first showed in 1890 that the spectra of lithium, sodium, and potassium were the summation of the spectra of various “series.” Later they have shown that lead ...

I. SPECTRUM analysis is now becoming so far-reaching, especially in inquiries having to do with the conditions of the various celestial bodies, that there are many who are anxious to know something of ...

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