Publisher's Synopsis
Excerpt from A Third Year's Course in Practical Physics
The present volume is the third of a series of elementary handbooks on Practical Physics. The aim throughout has been to set forth the instructions to the pupils in such a simple and clear way that they may be able to perform the experiments and understand the results with a minimum of work by the teacher. On the other hand, the theoretical part of the subject has been left almost entirely to the teacher, although in the present book a few proofs are added which should be understood by pupils in the third year of a science course.
Optics is such a wide subject that only a small part can be taken in a year's course, and the difficulty is to select the most suitable sections. Those chosen may be classed, with the exception of Chapters I. and II., under the term Pin Optics. The apparatus required is of the simplest - a few plane mirrors, curved mirrors, lenses (ordinary spectacle glasses do very well), and prisms. A cheap form of holder for the mirrors and lenses is shown on p. 39. Made of thin metal, this holder can be bent to hold lenses from about 1 to 5 cm. diameter. An optical bench is not required for any of the experiments.
Chapters I. and II. may be taken at the beginning of the session or left till the end. The experiments described in these two chapters are easy and interesting, and form a good introduction to the subject of light.
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