Energy elements

Japanese: エネルギー要素 - えねるぎーようそ
Energy elements

...However, H. Rubens and others pointed out that the Wien formula, which was thought to be perfect, differed from experiments in the long wavelength region, forcing Planck to reconsider. In October 1900, he announced a new distribution formula (Planck's radiation law) that matched the experiment by using an interpolation method, and then he considered entropy according to Boltzmann's atomic interpretation of thermodynamics, introduced the concept of energy element ε = h ν ( h is Planck's constant, ν is the frequency), and theoretically based the new distribution formula on the quantum hypothesis that the absorption and emission of radiation from resonators only occurs at integer multiples of this energy element, which he announced in December of the same year. Planck's success lies in his conscious pursuit of a method suitable for theoretically justifying the principle (distribution law) determined by the inherent reality of thermal radiation, based on experimental results that were based on the new stage of electrical experimental measurement methods. ...

*Some of the terminology explanations that mention "energy elements" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ところが完全だと思われていたウィーンの公式が長波長領域において実験と異なることがH.ルーベンスらによって指摘され,プランクは再検討を余儀なくされた。1900年10月,内挿法によって実験と一致する新分布式(プランクの放射則)を発表,その後ボルツマンの熱力学の原子論的解釈に従ってエントロピーを検討し,エネルギー要素ε=hν(hはプランク定数,νは振動数)という概念を導入,共鳴子の放射の吸収・放出は,このエネルギー要素の整数倍でしか起こらないとする量子仮説によって新分布式を理論的に基礎づけ,同年12月,これを発表した。プランクの成功は,電気的な実験測定手段の新段階に負うた実験的結果を踏まえ,熱放射固有の実在から規定される原理(分布則)に対して,理論的に基礎づけるにふさわしい方法を意識的に追求していったところにある。…

※「エネルギー要素」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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