• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Planck's and Duhem's physical researches in the turning period between the 19th and 20th centuries

Research Project

Project/Area Number 10680001
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 科学技術史(含科学社会学・科学技術基礎論)
Research InstitutionIWATE UNIVERSITY

Principal Investigator

INOUE Takayoshi  Faculty of Humanities and Social Sciences, Iwate University, Professor, 人文社会科学部, 教授 (00168452)

Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥600,000 (Direct Cost: ¥600,000)
KeywordsMax Planck / Pierre Duhem / irreversible thermodynamics / electrodiffusion / irreversible thermal radiation / atomism / ピェール・デュエム / プランク / デュエム / 非平衡熱力学史 / 19-20世紀転換期
Research Abstract

In this study we have shown that in Max Planck's physical investigation processes there had been a turning point from the thermodynamic studies of reversible processes to the physical ones of irreversible processes around 1890. In 1890 he investigated the electric potential difference between two electrolytic solutions with different concentrations. In this case positive and negative ions diffuse due to concentration gradient (electrodiffusion) , so that the second law of thermodynamics in the form of Carnot-Clausius's principle can not be applied to this case. Planck, therefore, considered elementary material mechanism of this irreversible process and its stationary state in detail, then he applied hydrodynamic equations and electrostatics (Poisson's equation) to it, and derived a formula for electric potential difference in the stationary state. When Planck began to research thermal radiation since 1894, he regarded its phenomenon as an irreversible one, which progressed by mutual interactions between linear electric oscillators and electromagnetic waves. His method of theoretical treatment of this case was a succession of the former method in the investigation on irreversible electrochemical processes in 1890.
Also in our research it has been explained that Pierre Duhem had shifted his investigations from equilibrium thermodynamics to irreversible thermodynamics in the beginning of 1900, and his results in the latter investigations were the initial fruits in this scientific field. Since 1900 Planck became an ardent supporter and promoter of the atomistic theory, on the other hand, Duhem kept a hostile attitude against the atomism and the kinetic theory of gases.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report

URL: 

Published: 1998-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi