An Introduction to Physical Measurements, Vol. 2: With Appendices on Absolute Electrical Measurement (Classic Reprint)

Excerpt from An Introduction to Physical Measurements, Vol. 2: With Appendices on Absolute Electrical Measurement

The Author, in the preface to the second German edition, gives a sketch of the purposes which he hopes that the pre sent book will serve. He says, a truth which all experience confirms, that the mere verbal teaching 'of physical laws is seldom of much use, tending frequently merely to confuse the student; while the simple performance of an experiment gives him confidence in himself and in the laws he is investi gating. Another use of such a manual in the education of the scientific student is to lead him, by means of measure ments which can be independently verified, to that know ledge of his powers which is so important when he has to do any original Work. The greater part of the treatise is devoted to measurements of physical quantities. From this circumstance we have thought its object better expressed by the title we have placed at the head of it than by a literal translation of the German one.

Descriptions of apparatus are but rarely given, as students mostly have instruments provided for them, and seldom have to make their own apparatus, or to put it together.

The mathematical knowledge required is but very ele mentary, as the proofs of the formulae are only given when they present no complex arguments.

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