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7 hours ago · 5.1.3 Remarks on Beating Betz. There is an ongoing discussion about whether it might be possible to get closer to a \(c_P^{max}\) of 1. In a lesser-known paper—probably because it is published in German only—Betz [] discussed already in 1926 the possibility of exceeding the \(\frac{16}{27}\) value if one relaxes the underlying assumptions, the most restrictive of which is the 2D actuator disk.
7 hours ago · Electromagnetism. Maxwell's equations, or Maxwell–Heaviside equations, are a set of coupled partial differential equations that, together with the Lorentz force law, form the foundation of classical electromagnetism, classical optics, electric and magnetic circuits. The equations provide a mathematical model for electric, optical, and radio ...
7 hours ago · In 1936 Heisenberg and Euler published in Zeitschrift für Physik a study based on the analysis of the Dirac equation, which had been published just a few years earlier. Two years prior to the Heisenberg–Euler paper, Born and Infeld [ 9 ] published a study based on the electron self-energy in Proc. Royal Society London, which led to their ...
7 hours ago · Figure 5.22a and b show the spatial response curves after range impulse compression without azimuthal impulse compression, where the vertical coordinate is the range frequency and the horizontal coordinate is the azimuthal time, where Fig. 5.22a shows the case when the Doppler shift is not compensated and Fig. 5.22b shows the case after the ...
