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2015:jadran_vrabec [2015/05/28 11:08] berislav |
2015:jadran_vrabec [2015/06/16 16:56] (current) berislav [Simulation, theory and experiment in thermodynamics from an engineer's point of view] |
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- | ====== There is only one speed ====== | + | |
- | [[https://www.fsb.unizg.hr/matematika/sikic/|Zvonimir Šikić]] | + | ====== Simulation, theory and experiment in thermodynamics from an engineer's point of view ====== |
+ | [[http://thet.uni-paderborn.de/mitarbeiter/jadran-vrabec/|Jadran Vrabec]] | ||
<fs 75%> | <fs 75%> | ||
- | \\ //Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb// | + | \\ //Thermodynamics and Energy Technology, Faculty of Mechanical Engineering, University of Paderborn// |
</fs> | </fs> | ||
<blockquote>**Abstract** | <blockquote>**Abstract** | ||
- | There is only one speed | + | Thermodynamics is a subject that was founded on experimental observations. One of the most notable early goals was to understand and further develop heat engines that are (still) powering our modern world. These observations have steered theory, where the first (energy conservation) and second law (direction of processes) of thermodynamics were major breakthroughs. In conjunction with these, numerous properties of matter, like enthalpy or entropy, were postulated. This, in turn, triggered systematic experimental investigations of such properties, because they are indispensable for practical applications. The according experiments are being carried out since the inception of thermodynamics until today. Based of Boltzmann’s understanding of the connection between molecules and thermodynamic properties, the advent of computing allowed for the development of molecular modelling and simulation as an alternative route, which is neither theory nor experiment. Given that Schrödinger’s ab initio approach has substantially strengthened the numerical ansatz, with ever more powerful computers the balance is shifting. In this paper, it is reported on the current interplay of simulation, theory and experiment in engineering thermodynamics. |
- | Zvonimir Šikić, Zagreb | + | |
- | Minkowski developed the four-dimensional physical space by combining three space coordinates and a time coordinate into a four-dimensional event and hereby: „Space by itself and time by itself are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality.“ Einstein joked that he no longer understood the special relativity (since the mathematicians took it up) but it is clear that the new geometric perspective was a great advance. It enabled Epstein to conclude that everything moves with the speed of light in this four-dimensional space-time: "The reason you can't go faster than the speed of light is that you can't go slower. //There is only one speed//. Everything, including you, is always moving at the speed of light." We will explain the philosophy of these extraordinary assertions. | + | |
</blockquote> | </blockquote> | ||
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