Measurement of the magnetic field of small magnets with a smartphone: a very economical laboratory practice for introductory physics courses
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http://hdl.handle.net/10045/49306
Títol: | Measurement of the magnetic field of small magnets with a smartphone: a very economical laboratory practice for introductory physics courses |
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Autors: | Arribas Garde, Enrique | Escobar García, Isabel | Suárez, Carmen P. | Nájera López, Alberto | Beléndez, Augusto |
Grups d'investigació o GITE: | Holografía y Procesado Óptico | GITE - Física, Óptica y Telecomunicaciones |
Centre, Departament o Servei: | Universidad de Castilla-La Mancha. Departamento de Física Aplicada | Autonomous University of San Luis Potosí. Academic Coordination Huasteca South | Universidad de Castilla-La Mancha. Departamento de Ciencias Médicas | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal |
Paraules clau: | University physics | Lab physics | New technologies | Active learning | Experimental |
Àrees de coneixement: | Física Aplicada |
Data de creació: | 31-de març-2015 |
Data de publicació: | 19-d’agost-2015 |
Editor: | IOP Publishing |
Citació bibliogràfica: | European Journal of Physics. 2015, 36(6): 065002 (11pp). doi:10.1088/0143-0807/36/6/065002 |
Resum: | In this work, we propose an inexpensive laboratory practice for an introductory physics course laboratory for any grade of science and engineering study. This practice was very well received by our students, where a smartphone (iOS, Android, or Windows) is used together with mini magnets (similar to those used on refrigerator doors), a 20 cm long school rule, a paper, and a free application (app) that needs to be downloaded and installed that measures magnetic fields using the smartphone's magnetic field sensor or magnetometer. The apps we have used are: Magnetometer (iOS), Magnetometer Metal Detector, and Physics Toolbox Magnetometer (Android). Nothing else is needed. Cost of this practice: free. The main purpose of the practice is that students determine the dependence of the component x of the magnetic field produced by different magnets (including ring magnets and sphere magnets). We obtained that the dependency of the magnetic field with the distance is of the form x-3, in total agreement with the theoretical analysis. The secondary objective is to apply the technique of least squares fit to obtain this exponent and the magnetic moment of the magnets, with the corresponding absolute error. |
Patrocinadors: | AB thanks the Vicerectorship of Information Technologies of the University of Alicante (Spain) and the help of GITE-09006-UA. IE is grateful to the Ministry of Economy and Competitiveness for help provided through the project DPI2012-32994. |
URI: | http://hdl.handle.net/10045/49306 |
ISSN: | 0143-0807 (Print) | 1361-6404 (Online) |
DOI: | 10.1088/0143-0807/36/6/065002 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2015 IOP Publishing Ltd |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1088/0143-0807/36/6/065002 |
Apareix a la col·lecció: | GITE - FOT - Artículos de Revistas Docencia - Ciencias - Ejercicios / Prácticas / Exámenes Docencia - Ingeniería y Arquitectura - Ejercicios / Prácticas / Exámenes INV - GHPO - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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EJP_v36_n6_art065002_2015.pdf | Versión final (acceso restringido) | 785,84 kB | Adobe PDF | Obrir Sol·licitar una còpia |
EJP_v36_n6_art065002_2015_accepted.pdf | Versión revisada (acceso abierto) | 1,14 MB | Adobe PDF | Obrir Vista prèvia |
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