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Query was: sodium

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• Title: Fourth Lecture (First Scientific Lecture-Course)
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  • IVg). Suppose this is a prism and this a sodium flame — a
  • flame in which the metal sodium is volatilizing. The sodium is turned
  • to gas; it burns and volatilizes. We make a spectrum of the sodium as
  • find one place in the spectrum strongly developed. For sodium light
  • spectrum of sodium. The rest of the spectrum is stunted —
  • example, that there is sodium in the flame. So we can recognize which
  • we interpose the sodium flame, so that the glowing sodium somehow
  • now the yellow of the sodium flame is added to it. But this is not
  • what happens. On the contrary, the yellow of the sodium flame
  • force that is brought to bear. If the sodium light arising here were
• Title: Fifth Lecture (First Scientific Lecture-Course)
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  • with glowing sodium gas: in the midst of a very feeble spectrum there
  • even darker by contrast. Sodium is therefore often spoken of as
  • the continuous spectrum and the one generating, say, the sodium line,
  • can take effect as it were simultaneously, the sodium line will be
  • spectrum when we interpose the glowing sodium. We have not been able
• Title: Sixth Lecture (First Scientific Lecture-Course)
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  • elasticity of the ether the extinction of the sodium line for
  • spectrum, in which we either create or extinguish the sodium line
  • (i.e., in the latter case, we generate the black sodium line). If
  • of light. The sodium line is extinguished in its old place and for