微量天びんの先駆者、飯盛挺造

NDLデジタルコレクション 被引用文献3件

書誌事項

タイトル別名
  • Teizo Ihmori, the Pioneer of the Microbalance

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抄録

Probably there is no one who talks of the history of the microbalance but refers to the achievements of Warburg, E. and Ihmori, T. For instance, Bahrndt, K. titled his article "The Microbalance And Its Development Since 1886", and stated that the microbalance for physical and chemical researches was first developed by them, and that, therefore, the year 1886 is the epochmaking era. This microbalance was so constructed that the atmosphere and temperature could be changed as desired in the entire range of pressure from atmospheric pressure to vacuum. Furthermore, for weighing continuous changes of mass, they employed a method of weighing by means of the lever of light with the object of solving various problems in physics and chemistry. With the development of this microbalance, study of density, atomic weight, adsorption, absorption, coefficient of expansion, magnetic susceptibility, vapour pressure, osmotic pressure, surface tension, viscosity, particle size distribution, chemical equilibrium, reaction velocity, etc., has become easier since that time. Teizo Ihmori was born in the Province of Hizen on August 24,1851. He went up to Tokyo in 1871,where he learned German and then taught German at the Tokyo Foreign Language School. In 1877,he became an assistant teacher in the Medical Faculty of the Tokyo University and taught physics there. Meanwhile, he translated a German book on physics into Japanese and published it for the students of his Medical Faculty as their reference books. In 1881,he became an assistant professor, and simultaneously he taught in another school. In 1884,Teizo Ihmori studied in Freiburg University in Germany, where he made a microbalance under the guidance of Prof. Warburg of the Physical Institute. Using this microbalance, he studied the phenomena of water adsorption on the surface of glass and many other substances, and contributed his article to Annalen der Physik and Chemie, Neue Folge. In March, 1886,Freiburg University awarded him the degree of Doktor der Philosophie. He further improved his microbalance, raised its sensitivity to 0.5 μg and using it, he studied the phenomena of adsorption of many substances and published his many views on the component materials of the microbalance. In 1887,he returned home and served in the Fourth High School both as a teacher and the vice principal temporarily. In the following year, he founded a private pharmaceutical school with some of his friends, and after 1893,he became professors of the abovementioned school and a girl's higher normal school. As an educator, he devoted himself solely in order to develop his students' abilities. While he was teaching physics to his students, he always wore a kindly face, and his fat body and smiling face were favourably received with good feeling. However, at the beginning of the 20th century, he was attacked by cerebral hemorrhage. Although he recovered once, he had been in poor health since then. He passed away in March, 1916 at the age of 65.

収録刊行物

  • 計量史研究

    計量史研究 2 (1), 25-36, 1980-11-10

    日本計量史学会

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