Excerpt from Physics for High School Students
The present volume has been written with the same purpose that guided the authors in the preparation of their "Elements of Physics," a book which has long been received with marked favor. The advances in physics are so rapid, and the point of view from which many topics are now considered is so different from that of half a dozen years ago, that it seemed best to make an entirely new book rather than a revision of the former one. The order of the general subdivisions has been changed to that employed by one of the authors in his ''University Physics," an order which has been approved by experience.
The authors hold firmly to the opinion that the classroom and the laboratory should be provided with separate books. The material which must be included in any textbook for the class-room makes.by itself an ample volume; none of it can be omitted without serious sacrifice. The addition of quantitative experiments for laboratory practice must either overload the volume devoted primarily to the exposition of principles, or it will result in an incomplete and unsatisfactory treatment of the directions for the laboratory. A class-book and a hand-book for the laboratory should be prepared from different points of view. The former should be devoted to a clear exposition of principles by qualitative experiments and by precise didactic statements; the latter should contain somewhat minute directions for the quantitative experiments of the laboratory.
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