Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Koczan, Grzegorz"'
Autor:
Koczan, Grzegorz M.
The paper provides three main definitions of the Cartesian photon position operator based on: boost generator, the transversality condition and the helicity operator. In each case, the correctness of the definition and Hermitianness of the operator i
Externí odkaz:
http://arxiv.org/abs/2309.12125
Autor:
Koczan, Grzegorz Marcin1 (AUTHOR) koczan1@sggw.edu.pl, Zivieri, Roberto2 (AUTHOR) roberto.zivieri@unife.it
Publikováno v:
Entropy. Dec2024, Vol. 26 Issue 12, p1122. 45p.
Autor:
Koczan, Grzegorz M.
Publikováno v:
Scientific Legacy of Professor Zbigniew Oziewicz, Chapter 9, Series on Knots and Everything 75, World Scientific 2023
Zbigniew Oziewicz was a pioneer of the 4D space-time approach to covariant relative velocities. In the 1980s (according to private correspondence) he discovered two types of 4D relative velocities: binary and ternary, along with the rules for adding
Externí odkaz:
http://arxiv.org/abs/2108.10725
Autor:
Koczan, Grzegorz M.
Publikováno v:
Acta Physica Polonica A 139(4):401-406, (2021)
It turns out that the standard application of the four-vector SR formalism does not include the concept of relative velocity. Only the absolute velocity is described by the four-vector, and even the Lorentz transformation parameters is described by t
Externí odkaz:
http://arxiv.org/abs/2106.01308
Autor:
Koczan, Grzegorz M., Ziomek, Juliusz
Publikováno v:
Przegl\k{a}d mechaniczny 1/2018, pp. 21-26
There are two alternative historical laws of rolling resistance formulated by French scientist Coulomb and Dupuit. It has been decided to verify experimentally again, which of these laws describes freely rolling ball bearings on a hard surface better
Externí odkaz:
http://arxiv.org/abs/2008.08127
Autor:
Koczan, Grzegorz, Kozakiewicz, Paweł
Publikováno v:
Drewno 2018, Vol. 61, No. 201
Wood is a fibrous orthotropic material additionally characterized with sign-sensitivity. Thus, determining the universal conditions of its strength constitutes a complex task. In their work, the authors present the anisotropic generalization of the H
Externí odkaz:
http://arxiv.org/abs/2006.09824
Autor:
Koczan, Grzegorz M.
Publikováno v:
Results in Physics 24,104121 (2021) Elsevier
Newton second law of dynamics is a law of motion but also a useful definition of force (F=MA) or inertial mass (M=F/A), assuming a definition of acceleration and parallelism of force and acceleration. In the special theory of relativity, out of these
Externí odkaz:
http://arxiv.org/abs/1909.09084
Autor:
Cetwińska, Aleksandra, Koczan, Grzegorz Marcin, Sadło, Maciej, Cetwiński, Krzysztof, Skrzyński, Grzegorz, Manasterski, Dariusz
Publikováno v:
Archaeometry; Dec2024, Vol. 66 Issue 6, p1343-1378, 36p
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