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When was the geometric structure of a water molecule discovered?

Császára et al. J. Chem. Phys. 122, 214305 (2005) has a nice table of determination of the bond angle of water per year (missing probably Linus Pauling predicting 90° from quantum mechanics in 1931). ...
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Why is thermodynamics called thermodynamics?

Thermodynamics is indeed derived from the Greek words Therme (heat) and Dynamis (power). However, Dynamis is not the same as the Physics definition of Power but is synonymous with "might" or ...
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Help in Understanding Emission theory of Empedocles

Much of Empedocles exists in fragments of what he originally wrote, so finding his literal writing on the subject may be difficult. However, we can infer what he said based on the commentary provided ...
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