Zobrazeno 1 - 10
of 134
pro vyhledávání: '"J. M. J. van Leeuwen"'
Autor:
J. M. J. van Leeuwen
Publikováno v:
SciPost Physics, Vol 8, Iss 4, p 059 (2020)
The friction felt by a speed skater is calculated as function of the velocity and tilt angle of the skate. This calculation is an extension of the more common theory of friction of upright skates. Not only in rounding a curve the skate has to be t
Externí odkaz:
https://doaj.org/article/d042be46294d4f0aa1f4d0d60eeee17b
Autor:
J. M. J. van Leeuwen
Publikováno v:
SciPost Physics, Vol 3, Iss 6, p 042 (2017)
The friction of a stationary moving skate on smooth ice is investigated, in particular in relation to the formation of a thin layer of water between skate and ice. It is found that the combination of ploughing and sliding gives a friction force th
Externí odkaz:
https://doaj.org/article/612f2f35c01c4dd78f6a3f527b98bd4a
Publikováno v:
Europhysics News, 50(1), 28-32
Skating has been popular for centuries but is still poorly understood. Is it sufficient that the surface of ice is wet in order to explain why skating is possible for a wide range of temperatures, velocities and types of skates? Or do we need a layer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34b6bf468cb1d11750845690d8d16f62
https://hdl.handle.net/1887/80098
https://hdl.handle.net/1887/80098
Autor:
J. M. J. van Leeuwen
Publikováno v:
SciPost Physics, Vol 8, Iss 4, p 059 (2020)
The friction felt by a speed skater is calculated as function of the velocity and tilt angle of the skate. This calculation is an extension of the more common theory of friction of upright skates. Not only in rounding a curve the skate has to be tilt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99affedb9289ec39bc5e7e9090fbaa11
Autor:
J. M. J. van Leeuwen
Publikováno v:
American Journal of Physics. 78:721-727
The physics of a row of toppling dominoes is discussed. In particular the forces between the falling dominoes are analyzed and with this knowledge, the effect of friction has been incorporated. A set of limiting situations is discussed in detail, suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::267d18816385a656022d9f22c7acc09a
https://doi.org/10.1119/1.3406154
https://doi.org/10.1119/1.3406154
Publikováno v:
Physics Reports. 475:53-90
Linear polymers are represented as chains of hopping reptons and their motion is described as a stochastic process on a lattice. This admittedly crude approximation still catches essential physics of polymer motion, i.e. the universal properties as f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::533af1e1bee73b0dab99f8a32c2738e8
https://doi.org/10.1016/j.physrep.2009.04.001
https://doi.org/10.1016/j.physrep.2009.04.001
Publikováno v:
Molecular Physics. 103:3091-3102
We consider an arbitrarily charged polymer driven by a weak electric field through a gel. The orientation of these polymers can be derived from a central model in which only the head is charged. The orientation displays characteristic bulk and tail b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::990d5099e531a7c828c742d60c8b5d0f
https://doi.org/10.1080/00268970500161816
https://doi.org/10.1080/00268970500161816
Publikováno v:
Journal of Statistical Physics. 109:449-469
We study the relaxation of force distributions in the q-model, assuming a uniform q-distribution. We show that “diffusion of correlations” makes this relaxation very slow. On a d-dimensional lattice, the asymptotic state is approached as l (1−d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6db7b4cb49e4954d79a379232a00970
https://doi.org/10.1023/a:1020442026840
https://doi.org/10.1023/a:1020442026840
Autor:
J. M. J. van Leeuwen, Henk W. J. Blöte
The tumbling of a rigid rod in a shear flow is analyzed in the high viscosity limit. Following Burgers, the Master Equation is derived for the probability distribution of the orientation of the rod. The equation contains one dimensionless number, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63331af13ad3d50f4cbd7cd33aae1cc3
http://arxiv.org/abs/1406.1317
http://arxiv.org/abs/1406.1317
Publikováno v:
Computer physics communications, 121/12(Sept/O), 483-488. Elsevier
The density matrix approach is a technique to calculate the lowest eigenvalue of a large matrix such as occurring in quantum mechanical systems. So far the method works very well for systems with a linear structure. The limitations for a planar struc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b80a70437d8e2d6d1edd0b5dc4ad64a
https://doi.org/10.1016/s0010-4655(99)00387-2
https://doi.org/10.1016/s0010-4655(99)00387-2