PHOSPHORESCENCE has so many modern applications and is of such fundamental significance in connexion with the theory of the solid state, that the appearance of this well-Written and comprehensive account of it is very welcome. Dr. Rupp describes the methods used to excite and analyse phosphorescent light, and gives an outline of the principal uses of phosphorescent bodies and the theories of phosphorescence. Her book is particularly valuable from the orderly way in which phenomena are classified, permitting of quick reference to any particular aspect of the subject, and for the detailed accounts provided of the preparation of some materials of technical importance. It includes a short history of phosphorescence, and a bibliography of recent publications.

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DOI

https://doi.org/10.1038/142776f0

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