Principles of Spectrum Analysis Prismatic Analysis of the Light of Incandescent Vapours Discontinuous Spectra Spectrum Bands proved by Bunsen and Kirchhoff to be characteristic of the Vapour Discovery of Rubidium, Cæsium, and Thallium Relation of Emission to Absorption The Lines of Fraunhofer Their Explanation by Kirchhoff Solar Chemistry involved in this Explanation Foucault's Experiment Principles of Absorption Analogy of Sound and Light Experimental Demonstration of this Analogy Recent Applications of the Spectroscope Summary and Conclusion
LECTURE VI.
From Six Lectures on Light by John Tyndall.
