A thick-walled sphere rotating in a uniform magnetic field: The next step to de-spin a space object
| Autor: | Robert C. Youngquist, Mark A. Nurge, Ryan A. Caracciolo, Mason A. Peck, Frederick A. Leve |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics Magnetic energy General Physics and Astronomy Gauss's law for magnetism Magnetostatics 01 natural sciences Magnetic flux Magnetic field symbols.namesake Classical mechanics Maxwell's equations 0103 physical sciences symbols Magnetic potential 010306 general physics Lorentz force |
| Zdroj: | American Journal of Physics. 85:596-610 |
| ISSN: | 1943-2909 0002-9505 |
| DOI: | 10.1119/1.4984810 |
| Popis: | Modeling the interaction between a moving conductor and a static magnetic field is critical to understanding the operation of induction motors, eddy current braking, and the dynamics of satellites moving through Earth's magnetic field. Here, we develop the case of a thick-walled sphere rotating in a uniform magnetic field, which is the simplest, non-trivial, magneto-statics problem that leads to complete closed-form expressions for the resulting potentials, fields, and currents. This solution requires knowledge of all of Maxwell's time independent equations, scalar and vector potential equations, and the Lorentz force law. The paper presents four cases and their associated experimental results, making this topic appropriate for an advanced student lab project. |
| Databáze: | OpenAIRE |
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