Principiul lui D’Alembert, temă de dezbatere ştiinţifică în mediile universitare şi academic româneşti în prima jumătate a secolului al XX-lea
D'Alembert 's Principle, Theme of Scientific Debate in Romanian University and Academic Society in the First Half of the Twentieth Century

Summary/Abstract: The paper aims to present the first scientific events organized by the Romanian Academy that marked the academic interests in our country to explain the Principle of d’Alembert. The protagonists of this approach (D. Pompei (years 1914–1943) and Șt. Hepites in 1914) were related to the presentation of d’Alembert`s basic ideas expressed in his „Traité de Dynamique” published in 1743 in which the author does not explicitly for mulate the famous principle that would bear his name and did not use the notion of „force of inertia”. In these circumstances the explanation of the Principles of d’Alembert bearing a strong didactical character has not engaged a debate of ideas, as only target was the primary form of d’Alembert’s contribution to the reformulation of the fundamental law of classical mechanics that Newton had formulated a century before. Through its Mathematics Section, Academy of Sciences organ ized a symposium on December 15th 1945 in the Mechanics Laboratory of the University of Bucharest. Two communications were presented „Forces of inertia in the light of the principles of dynamics” and „The phenomenon of inertia”, first by D.Germani, and the second by C. Budeanu. V.Vâlcovici, at the end, as the ini tiator, organizer and host of the event was pleased to declare an identity of views of the two outstanding relevant previous speak ers, expressed in different ways, and richly illustrated through examples from various technical fields, interpreted competently and with power of persuasion. The paper presents in detail all these scientific approaches in theoretical mechanics, in the early twentieth century.

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