Abstract
IN this volume Prof, Houllevigue gives an interesting and chatty account of many of the points at which the astronomer of to-day is touching upon the palpably unknown. It is interesting to see not only the selection of problems made by the author but also the way in which these problems are envisaged hy a Frenchman. To take one example of his special point of view, the chief emphasis in his account of recent and coming advances in telescopes is placed upon the Ritchey-Chre'tien researches, whereas most people would deal with the 200-inch telescope now being constructed for California. Among the twenty-five subjects chosen, we may mention the Cepheids, the corona, solar radiation, Saturn's rings, celestial ‘wanderers', the evolution and expansion of the universe, novae, interstellar gas, in order to show the range covered by the book.
Problèmes actuels de l'astrophysique
Par Prof. L. Houllevigue. Pp. xii + 268. (Paris: Armand Colin, 1935.) 14 francs.
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[Book Reviews]. Nature 136, 205 (1935). https://doi.org/10.1038/136205c0
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DOI: https://doi.org/10.1038/136205c0