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Full-Text Articles in Physics
Why Do Descending Shells Around Cumulus Clouds Exist?, Thijs Heus, Harm J.J. Jonker
Why Do Descending Shells Around Cumulus Clouds Exist?, Thijs Heus, Harm J.J. Jonker
Physics Faculty Publications
No abstract provided.
Lifecycle Analysis Of Cumulus Clouds Using A 3d Virtual Reality Environment, Thijs Heus, Harm J.J. Jonker, Eric J. Griffith, Frits H. Post
Lifecycle Analysis Of Cumulus Clouds Using A 3d Virtual Reality Environment, Thijs Heus, Harm J.J. Jonker, Eric J. Griffith, Frits H. Post
Physics Faculty Publications
No abstract provided.
The Influence Of The Sub-Cloud Moisture Field On Cloud Size Distributions And The Consequences For Entrainment, Harm J.J. Jonker, Remco A. Verzijlbergh, Thijs Heus, A. Pier Siebesma
The Influence Of The Sub-Cloud Moisture Field On Cloud Size Distributions And The Consequences For Entrainment, Harm J.J. Jonker, Remco A. Verzijlbergh, Thijs Heus, A. Pier Siebesma
Physics Faculty Publications
No abstract provided.
Partial-Wave Expansions Of Angular Spectra Of Plane Waves, James A. Lock
Partial-Wave Expansions Of Angular Spectra Of Plane Waves, James A. Lock
Physics Faculty Publications
Focused electromagnetic beams are frequently modeled by either an angular spectrum of plane waves or a partial-wave sum of spherical multipole waves. The connection between these two beam models is explored here. The partial-wave expansion of an angular spectrum containing evanescent components is found to possess only odd partial waves. On the other hand, the partial-wave expansion of an alternate angular spectrum constructed so as to be free of evanescent components contains all partial waves but describes a propagating beam with a small amount of standing-wave component mixed in. A procedure is described for minimizing the standing-wave component so as …
Quantifying Fluid Mixing With The Shannon Entropy, Marco Camesasca, Miron Kaufman, Ica Manas Zloczower
Quantifying Fluid Mixing With The Shannon Entropy, Marco Camesasca, Miron Kaufman, Ica Manas Zloczower
Physics Faculty Publications
We introduce a methodology to quantify the quality of mixing in various systems, including polymeric ones, by adapting the Shannon information entropy. For illustrative purposes we use particle advection of two species in a two-dimensional cavity flow. We compute the entropy by using the probability of finding a suitable chosen group/complex of particles of a given species, at a given location. By choosing the size of the group to be in direct proportion to the overall concentration of the components in the mixture we ensure that the entropic measure is maximized for the case of perfect mixing, that is, when …
Scattering Of A Tightly Focused Beam By An Optically Trapped Particle, James A. Lock, Susan Y. Wrbanek, Kenneth E. Weiland
Scattering Of A Tightly Focused Beam By An Optically Trapped Particle, James A. Lock, Susan Y. Wrbanek, Kenneth E. Weiland
Physics Faculty Publications
Near-forward scattering of an optically trapped 5-mu m-radius polystyrene latex sphere by the trapping beam was examined both theoretically and experimentally. Since the trapping beam is tightly focused, the beam fields superpose and interfere with the scattered fields in the forward hemisphere. The observed light intensity consists of a series of concentric bright and dark fringes centered about the forward-scattering direction. Both the number of fringes and their contrast depend on the position of the trapping beam focal waist with respect to the sphere. The fringes are caused by diffraction that is due to the truncation of the tail of …
Group Iv Solid State Proposals For Quantum Computation, Petru S. Fodor, J. Levy
Group Iv Solid State Proposals For Quantum Computation, Petru S. Fodor, J. Levy
Physics Faculty Publications
The discovery of the quantum factorization algorithm more than a decade ago triggered intense interest in exploring possible physical realizations of quantum computers. Among the many solid state proposals, electron and nuclear spins in Si and group IV related materials have long coherence times and the capability of state preparation, gating and read-out using electric, magnetic and optical fields. Proposals involving silicon seek to take advantage of an existing mature technology and the implicit promise of scalability from solid state materials. Nevertheless, building such quantum systems depends in many cases on the development of fabrication techniques with nearly atomic precision. …