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The New Physics and Its Evolution
Lucien Poincaré
Book Overview:
The end of the 19th and beginning of the 20th century marked a new era in the study of physics. It seemed as though everything that was thought to be known was being called into question. This book attempts to summarize some of the most critical discoveries and theories in the decade or so leading up to its publication in a relatively non-technical fashion, and provides insight into our understanding of the world in the midst of the modern physics revolution.
The end of the 19th and beginning of the 20th century marked a new era in the study of physics. It seemed as though everything that was thought to be known was being called into question. This book attempts to summarize some of the most critical discoveries and theories in the decade or so leading up to its publication in a relatively non-technical fashion, and provides insight into our understanding of the world in the midst of the modern physics revolution.
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To define the measure of a certain temperature, we take, in practice, some arbitrary property of a body. The only necessary condition of this property is, that it should constantly vary in the same direction when the temperature rises, and that it should possess, at any temperature, a well-marked value. We measure this value by melting ice and by the vapour of boiling water under normal pressure, and the successive hundredths of its variation, beginning with the melting ice, defines the percentage. Thermodynamics, however, has made it plain that we can set up a thermometric scale without relying upon any determined property of a real body. Such a scale has an absolute value independently of the properties of matter. Now it happens that if we make use for the estimation of temperatures, of the phenomena of dilatation under a constant pressure, or of the incr. . . Read More
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Community Reviews
This book certainly contains a lot of information. Much of the information is laid out in a cursory fashion without much explanation so it is not a great resource if you are trying to really understand some concepts. As a broad survey of the then current state of physics as when Poincare wrote this,
The book is written in an older style and deals with ideas of physics contemporaneous with Poincare, who is widely considered an all time great among physicists. It is interesting to read because of the way the ideas are communicated, and is intended for the many who read occasional books on science