Linear Quadrupole Magnetic Field Measured with a Smartphone

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Title: Linear Quadrupole Magnetic Field Measured with a Smartphone
Authors: Arribas Garde, Enrique | Escobar García, Isabel | Ramírez Vázquez, Raquel | Suárez Rodríguez, Carmen del Pilar | González Rubio, Jesús | Beléndez, Augusto
Research Group/s: Holografía y Procesado Óptico | GITE - Física, Óptica y Telecomunicaciones
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías | Universidad de Castilla-La Mancha. Departamento de Física Aplicada | Universidad Autonoma San Luis Potosí (México)
Keywords: Physics education | Laboratory experiments | Magnetic field | Linear quadrupole
Knowledge Area: Física Aplicada
Issue Date: 19-Feb-2020
Publisher: AIP Publishing
Citation: The Physics Teacher. 2020, 58: 182-185. doi:10.1119/1.5145411
Abstract: We believe that a natural focus of the physics education research community is on understanding and improving students’ learning in our physics courses. Due to the increase in technology, we can bring laboratory experiments closer to our students. It is necessary to update our laboratories technologically to get closer to the world in which our students live. With this in mind, we have considered the magnetic field created by a linear quadrupole and we have studied its dependence on distance, n being the exponent of distance. The main objective of this exercise is for our students to discover that the exponent n is very close to –4. The purpose of this work is to show that a laboratory is a powerful tool that increases significant learning under three conditions: 1) the practice must not be too sophisticated; 2) students must handle objects in the lab; and 3) the practice must be scientifically accurate, including the fitting using the least-squares approximation, and the following and necessary error calculation. We provide this practice so that all interested physics teachers can use it and adapt it to their specific laboratory.
Sponsor: AB thanks the “Generalitat Valenciana” of Spain (project PROMETEOII/2015/015). IE is grateful to the Ministry of Economy and Competitiveness for the help provided through the project DPI2015-66458-C2-1-R. EA thanks the Associated Center UNED Albacete for the facilities given for the use of its laboratory.
ISSN: 0031-921X (Print) | 1943-4928 (Online)
DOI: 10.1119/1.5145411
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2020 American Association of Physics Teachers
Peer Review: si
Publisher version:
Appears in Collections:INV - GHPO - Artículos de Revistas
GITE - FOT - Artículos de Revistas

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