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XIV.—The Absorption of Light by Inorganic Salts. No. XI.: Conclusion

Published online by Cambridge University Press:  15 September 2014

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Extract

In this paper a short account will be given of the present state of the theory of the absorption of light, with special reference to the results gained in this series of investigations.

Theories of the dispersion of light may be divided into two classes: (1) those in which the body is regarded as consisting of particles which vibrate under the influence of the light wave; and (2) those in which the body is regarded as consisting of obstacles which diffract the light wave. According to (2), light is scattered, not absorbed; a wave going through the body diminishes in intensity, but the energy lost is radiated out laterally without change of wave-length.

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Proceedings
Copyright
Copyright © Royal Society of Edinburgh 1914

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References

page 156 note * For a clear account of them all, cf. Professor Pflüger's monograph in the fourth volume of Kayser's Spectroscopie.

page 157 note * It is explained in the same way in Schuster's Optics.

page 157 note † “Optische Eigenschaften und Electronentheorie,” Drude's Ann., 14, pp. 677–726, pp. 936–961 (1904).

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page 164 note † This applies also to Dr Havelock's theory, Proc. Roy. Soc., A, 86, p. 15, 1911.

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