Results 91 to 100 of about 11,457,962 (286)
Landau Levels versus Hydrogen Atom
UniverseThe Landau problem and harmonic oscillator in the plane share a Hilbert space that carries the structure of Dirac’s remarkable so(2,3) representation.
Tekin Dereli +2 more
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The Journal of Physiology, EarlyView.Abstract figure legend In this study, we use human‐induced pluripotent stem cell‐derived cardiomyocyte (hiPSC‐CM) experiments and computational modelling to identify the mechanism of action of drug compounds. In the hiPSC‐CM experiments, optical measurements of cell collections are recorded in the baseline case and after drug exposure.
Karoline Horgmo Jæger +4 more
wiley +1 more source
Journal of Computer Assisted Learning, Volume 42, Issue 1, February 2026.ABSTRACT Background One of the advances in learning with technology is digital adaptive learning (AL) materials for mathematics. Although empirical studies have shown the benefits of AL for learners and teachers, little research has been done on teachers' perceptions and needs of digital AL and their plans for implementation in mathematics classrooms ...
Selina Baldinger +2 more
wiley +1 more source
The Mathematica Journal, 2011 where a y b and aab are the dot and cross products, respectively. One can easily verify that this multiplication is associative (multiplication of three or more quaternions is meaningful without parentheses), but it is clearly noncommutative (changing the order of quaternions in a product will, in general, yield a different answer). Taking a quaternion’
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Journal of Research in Science Teaching, Volume 63, Issue 2, Page 161-185, February 2026.ABSTRACT While understanding the nature of science (NOS) is recognized as a key component of science education because of its potential benefits in nurturing scientific literacy, there is currently limited knowledge on how NOS learning can be supported by teachers' ongoing, in‐the‐moment assessment in the classroom.
Wonyong Park +2 more
wiley +1 more source
The comfortable roller coaster -- on the shape of tracks with constant normal force
, 2010 A particle that moves along a smooth track in a vertical plane is influenced by two forces: gravity and normal force. The force experienced by roller coaster riders is the normal force, so a natural question to ask is: what shape of the track gives a ...
Arne B Nordmark +7 more
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Astronomische Nachrichten, Volume 347, Issue 1, January 2026.ABSTRACT Isochrones, equal‐age curves, are widely used in astrophysics to estimate stellar ages. Classical stellar parameters are, however, very limited in their usability for main sequence stars because of their weak age‐dependence. Here, rotation period measurements provide complementary information.
David Gruner, Sydney A. Barnes
wiley +1 more source
EPJ Web of Conferences, 2017 Stars originate by the gravitational collapse of a turbulent molecular cloud of a diffuse medium, and are often observed to form clusters. Stellar clusters therefore play an important role in our understanding of star formation and of the dynamical ...
Corsaro Enrico +8 more
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Non-integrability of the Kepler and the two body problem on the Heisenberg group [PDF]
, 2021 Andrzej J. Maciejewski +1 more
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Conformal regularization of the Kepler Problem [PDF]
Communications in Mathematical Physics, 1986 The classical Kepler problem has singularities because the moving particle can run into the attractive center in finite time. There are various ways to regularize the problem. The present paper clarifies and completes the previous approaches to the regularization of the Kepler problem.
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