the theory of heat radiation
- Author: max planck
- Genre: Physics
In 1900 Max Planck introduced a quantum constant into his mathematical expression for the energy distribution of blackbody radiation. This book is a revolution in 20th century physics. The first fifty pages examine heat radiation from the perspective of classical optics, including topics like radiation at thermodynamic equilibrium, Kirchhoff's law, and blackbody radiation. The next fifty pages, deductions from electrodynamics and thermodynamics, were substantially more mathematical. Planck discussed the Stefan-Boltzmann law of radiation and the Wien displacement law in detail as well as spectral distribution of energy radiation. Section III presents a general procedure for calculating entropy and introduces his quantum hypothesis. This book is a great help for students studying physics, for teachers and for anyone interested in this science.
the origin and development of the quantum theory
- Author: max planck
- Genre: Colonial Period
My task this day is to present an address dealing with the subjects of rny publications. I feel I can best discharge this duty, the significance of which is deeply impressed upon me by my debt of gratitude to the generous founder of this Institute, by attempting to sketch in outline the history of the origin of the Quantum Theory and to give a brief account of the development of this theory and its influence on the Physics of the present day.When I recall the days of twenty years ago, when the conception of the physical quantum of ' action' was first beginning to disentangle itself from the surrounding mass of available experimental facts, and when I look back upon the long and tortuous road which finally led to its disclosure, this development strikes me at times as a new illustration of Goethe's saying, that 'man errs, so long as he is striving And all the mental effort of an assiduous investigator must indeed appear vain and hopeless, if he does not occasionally run across About the Publisher Forgotten Books is a publisher of historical writings, such as: Philosophy, Classics, Science, Religion, History, Folklore and Mythology.Forgotten Books' Classic Reprint Series utilizes the latest technology to regenerate facsimiles of historically important writings. Careful attention has been made to accurately preserve the original format of each page whilst digitally enhancing the difficult to read text. Read books online for free at www.forgottenbooks.org
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