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Direct linkFrontali, Clara – Physics Education, 2014
Difficulties encountered by teachers in giving a definition of the term "energy", and by students in grasping its actual meaning, reflect the lengthy process through which the concept eventually came to maturity around 1850. Tracing the history of this process illuminates the different aspects covered by the term and shows the important…
Descriptors: Energy, Physics, Science Instruction, Definitions
Peer reviewedLeenson, I. A. – Journal of Chemical Education, 2004
On equilibrium properties of aqueous solutions of sulfuric acid, Julius Thomsen has marked that the heat evolved on diluting liquid sulfuric acid with water is a continuous function of the water used, and excluded absolutely the acceptance of definite hydrates as existing in the solution. Information about thermochemical measurement, a discussion…
Descriptors: Chemistry, Water, Heat, Science Experiments
