Friedrich Paschen : The Initiator of the Experimental Research for Deriving the Law of Radiation in the 1890s

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  • 1890年代の熱輻射分布法則導出におけるパッシェンの実験研究の先導的役割
  • 1890ネンダイ ノ ネツフクシャ ブンプ ホウソク ドウシュツ ニ オケル パッシェン ノ ジッケン ケンキュウ ノ センドウテキ ヤクワリ

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Abstract

This paper examines the process and development of revolutionary data of thermal radiation in the late 19th century, focusing on Friedrich Paschen's experimental research in the early to mid-1890s. The well-known experiments of O. Lummer and E. Pringsheim, H. Rubens and F. Kurlbaum had brought about the suggestive results concerning Planck's radiation law. Paschen's research played an important role in pioneering experimentalists who were active in the early 1890s. Before Lummer, Pringsheim, Rubens, and Kurlbaum made a series of experiments on the radiation law, Paschen had begun to research on the "Normal Spectrum " representing the spectral distribution of radiation energy. He had made it to examine the spectrum of diffraction grating with the directions of H. Kayser in 1891-1892. In the meantime, other experimentalists such as Lummer and Rubens conducted research on the measurements of luminous intensity and electricity at the request of refining the standards. In 1893 Paschen improved the foundation for experiments on thermal radiation by utilizing those different kinds of measurements and made a step forward in the precision measurements of radiation distribution function.

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