Results 171 to 180 of about 238 (199)
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Magnetic stimulation study in mirror movements
Journal of Neurology, 1990A young man with congenital mirror movements was studied by non-invasive magnetic stimulation. Radiological examination showed no craniocervical or pituitary abnormality except for mild atrophy of the right hippocampus. Magnetic stimulation of the motor cortex caused large amplitudes in the ipsilateral hand muscles, indicating the possibility of ...
Y, Konagaya, Y, Mano, M, Konagaya
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Cyclotron-resonance maser in a magnetic mirror
Physical Review E, 1999A cyclotron-resonance maser (CRM) experiment is performed in a high-gradient magnetic field using a low-energy electron beam ( approximately 10 keV/1 A). The magnetic field exceeds 1.63 T, which corresponds to a 45-GHz cyclotron frequency. The CRM radiation output is observed in much lower frequencies, between 6.6 and 20 GHz only.
R, Caspi, E, Jerby
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Realization of a Magnetic Mirror for Cold Atoms
Physical Review Letters, 1995We have demonstrated that cold atoms can be retroflected from a ferromagnetic surface by the Stern-Gerlach effect. When the surface is magnetized periodically, the reflectivity for suitably polarized atoms is $(94\ifmmode\pm\else\textpm\fi{}8)%$ and the reflection is specular.
, Roach +5 more
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American Journal of Physics, 1995
Symmetries play an important role in physics. In this article, we examine the relationship between magnetism and mirror symmetry. The reflection properties of the vector potential A(t) and the magnetic induction B(t) are obtained, and these properties are used to analyze some simple circuits.
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Symmetries play an important role in physics. In this article, we examine the relationship between magnetism and mirror symmetry. The reflection properties of the vector potential A(t) and the magnetic induction B(t) are obtained, and these properties are used to analyze some simple circuits.
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An analogy of a magnetic mirror in mechanics
European Journal of Physics, 2005Summary: The motion of a charged particle in a magnetic mirror device is compared to the motion of a bead spiralling into a smooth hollow cone. The complete solution of the motion of the bead is derived and physical aspects of the solution obtained are discussed.
Lal, Amit, Badiger, Shrikrishna M
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Magnetic mirrors at the nanoscale: theory
SPIE Proceedings, 2004The control of charged particles at sub micrometer and nanometer length scales presents an intrinsically interesting challenge, as well as being a rich field for the study of trapped ions and plasmas. Motivated by this, we obtain the exact solution for the vector potential for a wire of finite length and of arbitrary form. Closed form solutions can
Mark P. J. L. Chang +2 more
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Design applications of magnetic mirrors
Journal of Applied Physics, 1988Recent developments in permanent-magnet materials have made possible several novel high-field sources, with great potential application in mm/microwave/optical technology. However, even the crude approximations to such structures, which are needed to make their manufacture viable, entail as many as 72 pieces with eight distinct shapes.
H. A. Leupold, E. Potenziani II
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Magnetic Mirror on Optical Frequency
Integrated Photonics Research and Applications/Nanophotonics, 2006We report demonstration of an optical magnetic mirror achieved by nanostructuring a metal surface. In contrast to normal mirrors, it inflicts only small change to the phase of a reflected wave, offering intriguing applications.
Schwanecke, Alexander S. +7 more
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A Demonstration of the Magnetic Mirror Effect
American Journal of Physics, 1962A description is given of the magnetic mirror effect exhibited by charged particles spiralling into a converging magnetic field. The apparatus makes use of a commercial electron tube filled with an inert gas, originally designed for measuring the specific charge of the electron.
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Magnetic Fluid Deformable Mirrors
2012The number of new adaptive optics applications has soared during the last decade, demonstrating the need for low-cost, high-stroke deformable mirrors with a large number of actuators. Magnetic fluid deformable mirrors (MFDMs) were proposed a few years ago as an alternative to conventional membrane deformable mirrors used in wavefront correctors. Though
Zhizheng Wu +2 more
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