The Theory of Heat Radiation
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In our eReader you can find the full English version of the book. Read The Theory of Heat Radiation Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Theory of Heat Radiation
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Boltzmann 1 in his kinetic theory of 1 L. Boltzmann, Vorlesungen iiber Gastheorie, 1, Sec. 6.
120 ENTROPY AND PROBABILITY gases. Nevertheless our equation (164) differs in its meaning from the corresponding one of Boltzmann in two essential points.
Firstly, Boltzmann' s equation lacks the factor k, which is due to the fact that Boltzmann always used gram-molecules, not the molecules themselves, in his calculations. Secondly, and this is of greater consequence, Boltzmann leaves an additive const...ant undetermined in the entropy S as is done in the whole of classical thermodynamics, and accordingly there is a constant factor of proportionality, which remains undetermined in the value of the probability W.
In contrast with this we assign a definite absolute value to the entropy S. This is a step of fundamental importance, which can be justified only by its consequences. As we shall see later, this step leads necessarily to the " hypothesis of quanta" and moreover it also leads, as regards radiant heat, to a definite law of distribution of energy of black radiation, and, as regards heat energy of bodies, to Nernst's heat theorem.
What to read after The Theory of Heat Radiation?
You can find similar books in the "Read Also" column, or choose other free books by Max Planck to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Boltzmann 1 in his kinetic theory of 1 L. Boltzmann, Vorlesungen iiber Gastheorie, 1, Sec. 6.
120 ENTROPY AND PROBABILITY gases. Nevertheless our equation (164) differs in its meaning from the corresponding one of Boltzmann in two essential points.
Firstly, Boltzmann' s equation lacks the factor k, which is due to the fact that Boltzmann always used gram-molecules, not the molecules themselves, in his calculations. Secondly, and this is of greater consequence, Boltzmann leaves an additive const...ant undetermined in the entropy S as is done in the whole of classical thermodynamics, and accordingly there is a constant factor of proportionality, which remains undetermined in the value of the probability W.
In contrast with this we assign a definite absolute value to the entropy S. This is a step of fundamental importance, which can be justified only by its consequences. As we shall see later, this step leads necessarily to the " hypothesis of quanta" and moreover it also leads, as regards radiant heat, to a definite law of distribution of energy of black radiation, and, as regards heat energy of bodies, to Nernst's heat theorem.
What to read after The Theory of Heat Radiation?
You can find similar books in the "Read Also" column, or choose other free books by Max Planck to read onlineMoreLess
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