Literaturnachweis - Detailanzeige
| Autor/inn/en | Lara, V. O. M.; Amaral, D. F.; Faria, D.; Vieira, L. P. |
|---|---|
| Titel | Demonstrations of Magnetic Phenomena: Measuring the Air Permeability Using Tablets |
| Quelle | In: Physics Education, 49 (2014) 6, S.658-662 (5 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0031-9120 |
| DOI | 10.1088/0031-9120/49/6/658 |
| Schlagwörter | Measurement Techniques; Magnets; Electronic Equipment; Physics; Demonstrations (Educational); Science Experiments; Scientific Concepts; Scientific Methodology; Scientific Principles; Energy; Accuracy; Teaching Methods; Educational Practices; Educational Strategies; Power Technology |
| Abstract | We use a tablet to experimentally determine the dependencies of the magnetic field (B) on the electrical current and the axial distance from a coil (z). Our data shows good precision on the inverse cubic dependence of the magnetic field on the axial distance, B?z[superscript -3]. We obtain the value of air permeability µ[subscript air] with good accuracy. We also observe the same dependence of B on z when considering a magnet instead of a coil. Although our estimates are obtained through simple data fits, we also perform a more sophisticated error analysis, confirming the result for µ[subscript air]. (As Provided). |
| Anmerkungen | Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://journals.iop.org |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2017/4/10 |
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